JP6205797B2 - PLAYLIST CREATION DEVICE, SOUND DEVICE, PLAYLIST CREATION METHOD, AND PROGRAM - Google Patents

Description

  The present invention relates to a technical field of a playlist creation device, an audio device, a playlist creation method, and a program for creating a playlist including reproduction order information of a plurality of music pieces.

  As this type of device, there is known a device that automatically selects music to be reproduced and creates a playlist. The music selection at the time of creating the playlist is performed by judging the commonality and similarity of the tempo and the like with respect to the preceding and succeeding songs in order to realize smooth switching of the continuously played music.

  For example, Patent Document 1 proposes a technique for creating a playlist using two conditions of an overall constraint condition and a time series thinking condition. Patent Document 2 proposes a technique for creating a playlist based on music selection information received from a user terminal. In Patent Document 3, n! A technique of creating individual playlist candidates has been proposed.

JP 2006-039744 A JP 2002-073041 A JP 2009-205751 A

  However, when the technology according to each of the above-described patent documents is used, there is a possibility that only songs having similar setting conditions may be selected as songs constituting the playlist. For this reason, even if the music can be smoothly switched, only similar music is reproduced, and a technical problem arises that the listener gets bored while listening repeatedly.

  The present invention has been made in view of the above-described problems, for example, and realizes a smooth switching of music and a playlist creation device, an audio device, and a playlist creation method capable of performing music selection that does not get tired of the listener It is an object to provide a program.

In order to solve the above-mentioned problem, the playlist creating apparatus of the present invention is based on acquisition means for acquiring music information and the music information on the n-th music that is the n-th music (n is a natural number). The music selection means for selecting the (n + 1) th music that is the (n + 1) th music to be reproduced, the list creation means for creating the playlist including the nth music and the (n + 1) th music, and the music selection tendency that the user desires for the music selection means. A second input means for inputting, wherein the music selection tendency is a parameter indicating a change in tune in time of progression of the playlist in time series, and the music selection means has a predetermined music information for the n-th music. A plurality of candidate songs in the similar range are extracted, and the n + 1-th song is selected from the plurality of candidate songs based on the music selection tendency .

In order to solve the above-described problem, the playlist creation method of the present invention is based on an acquisition step of acquiring music information and the music information on the n-th music that is the music played back n-th (n is a natural number). A music selection step of selecting music by means of music selection means for selecting the n + 1th music that is the music to be reproduced n + 1th, a list creation step of creating a playlist including the nth music and the n + 1th music, and the user selects the music A step of inputting a music selection tendency desired by the means, and the music selection tendency is a parameter indicating a change in tone of the music in the progress of the playlist in time series, and the music selection means has the music information predetermined for the n-th music. Extracting a plurality of candidate music pieces in the similar range of and selecting the n + 1-th music piece from the plurality of candidate music pieces based on the music selection tendency; Provided.

In order to solve the above problems, the program of the present invention uses a computer to acquire music information, and based on the music information related to the nth music that is the nth music (n is a natural number). The music selection means for selecting the (n + 1) th music that is the (n + 1) th music to be reproduced, the list creation means for creating the playlist including the nth music and the (n + 1) th music, and the music selection tendency that the user desires for the music selection means. The means for inputting and the music selection tendency are parameters indicating time-series variations in the tone of music in the progress of the playlist, and the music selection means has the music information within a predetermined similar range with respect to the n-th music. A plurality of candidate songs are extracted and functioned as means for selecting the n + 1-th song from the plurality of candidate songs based on the music selection tendency .

  The effect | action and gain of this invention are clarified from the form for implementing invention demonstrated below.

It is a block diagram which shows the hardware constitutions of the audio equipment apparatus which concerns on an Example. It is a functional block diagram which shows the software structure of the audio equipment apparatus which concerns on an Example. It is a flowchart which shows the operation | movement at the time of the play list preparation of the audio equipment apparatus which concerns on an Example. It is a conceptual diagram which shows the setting method of the music selection conditions for determining a head music. It is a conceptual diagram which shows the setting method of the music selection conditions for determining n + 1st music. It is a conceptual diagram which shows the setting method of a speed scenario.

  In order to solve the above-described problem, the playlist creating apparatus according to the present embodiment is based on acquisition means for acquiring music information and the music information on the n-th music that is an n-th music (n is a natural number). In addition, music selection means for selecting the (n + 1) th music that is the music to be reproduced n + 1th, and list creation means for creating a playlist including the nth music and the (n + 1) th music are provided.

  The playlist creation apparatus according to the present embodiment includes various arithmetic circuits such as a CPU (Central Processing Unit), and storage media such as a ROM (Read Only Memory) and a RAM (Random Access Memory). In addition, a large-capacity storage for storing music data included in the playlist may be provided.

  During the operation of the playlist creating apparatus according to the present embodiment, first, music information possessed by the music is acquired by the acquisition means. The “music information” here is a parameter for determining the commonality or similarity of continuously reproduced music, and includes, for example, the genre and tempo of the music. The music information can be acquired from, for example, analysis of music data or accompanying data of music. Although one type of parameter is sufficient for the music information, a plurality of types of parameters may be acquired. Note that the music information may not be acquired for all music pieces.

  When the music information is acquired, the music selection means selects the (n + 1) th music (that is, the music to be reproduced next to the nth music) based on the music information of the nth music. More specifically, for example, a song whose genre is the same as that of the nth song, a song whose tempo is close to the nth song, and the like are selected as the (n + 1) th song.

  When the (n + 1) th music is selected, a playlist including the nth music and the (n + 1) th music is created by the list creating means. The playlist may include only the n-th music and the n + 1-th music, or other music (for example, the n + 2 music and the n + 3-th music played after the n + 1-th music). It may be included. In addition, about the music reproduced | regenerated after the (n + 1) th music, music can be selected sequentially by regarding the (n + 1) th music as the nth. Specifically, the (n + 2) th music can be selected based on the music information of the (n + 1) th music, and the (n + 3) th music can be selected based on the music information of the (n + 2) th music.

  As described above, if the (n + 1) th music piece is selected based on the music information of the nth music piece, the reproduction order of a plurality of continuously reproduced music pieces can be suitably determined. Here, in particular, since each music piece in the playlist is selected based on the music information of the previous music piece, when the music piece is continuously reproduced using the play list, the switching of music pieces can be made appropriate. Specifically, since two pieces of music that are continuously played are music pieces having similar pieces of music information, for example, when a piece of music is continuously played by performing a mixing process such as crossfading, the switching is smooth and uncomfortable. Can be realized.

  Further, in the present embodiment, in particular, since each music is selected based on only the music information of the previous music (in principle, the music is selected without being restricted except for the music information of the previous music), the entire playlist is selected. Can be prevented from selecting only music pieces having similar music information. Specifically, the (n + 1) -th music is selected as a music whose music information is similar to the previous n-th music, and the (n + 2) -th music is selected as a music whose music information is similar to the previous n + 1-th music. Is not necessarily selected as a music piece whose music information is similar to that of the n-th music piece. Therefore, it is possible to suitably prevent only similar music from being played and getting the listener bored.

  As described above, according to the playlist creating apparatus according to the present embodiment, music can be smoothly switched and music selection that does not bore the listener can be performed.

  In addition, when the nth music is the music that is reproduced first in the playlist, there is no music that is reproduced immediately before, so the nth music cannot be determined based on the music information of the previous music. For this reason, the first song included in the playlist is determined by a method different from other songs (for example, it may be determined completely at random, or may be specified directly by the user, or the user May be determined based on specified conditions).

  In one aspect of the playlist creation device according to the present embodiment, the music information includes analysis information obtained by analyzing the music.

  According to this aspect, for example, the (n + 1) th music is determined based on the tempo, beat timing, and the like obtained by analyzing the n music, so that switching from the nth music to the (n + 1) th music can be made uncomfortable. The analysis process for obtaining the analysis information may be executed by the acquisition unit or may be executed outside the apparatus. That is, the playlist creation apparatus itself may perform the analysis process, or only the analysis information may be acquired as a result of the analysis process outside the apparatus.

  In another aspect of the playlist creation device according to the present embodiment, the music information includes accompanying information stored along with the music.

  According to this aspect, for example, since the (n + 1) th music is determined based on the tempo, genre, etc. included in the metadata or the like stored accompanying the nth music, the switching from the nth music to the (n + 1) th music is performed. It can be made uncomfortable. In addition, since the accompanying information stored in advance can be used as it is, the music information can be acquired relatively easily.

  In another aspect of the playlist creating apparatus according to the present embodiment, the music selection means selects the n + 1th music piece during the reproduction of the nth music piece.

  According to this aspect, only the (n + 1) th music is selected during the reproduction of the nth music, and the music selection of the music reproduced after the (n + 1) th music (that is, the (n + 2) music and the (n + 3) th music) is not executed. If the music is selected in this way, a play list is sequentially created during the reproduction of the music, so that a real-time feeling can be suitably produced. Further, since it is not required to select a large number of music pieces in advance, it is possible to reduce an increase in apparatus burden caused by the concentrated music selection process. Such an effect of reducing the load is remarkably exhibited when, for example, re-creation of a playlist associated with a change in the reproduction music is performed.

  In another aspect of the playlist creation device according to the present embodiment, the playlist creation device further includes an input unit that allows the user to select the music information used for music selection by the music selection unit.

  According to this aspect, since the user can select music information, music selection with the user's intention can be performed, and a playlist desired by the user can be suitably created. The user can also select a plurality of pieces of information as music information.

  In another aspect of the playlist creating apparatus according to the present embodiment, the music selection means extracts a plurality of candidate songs whose music information is within a predetermined similar range with respect to the n-th song, and the plurality of candidates The n + 1th music is randomly selected from the music.

  According to this aspect, when selecting the (n + 1) th song, first, a plurality of candidate songs whose music information is within a predetermined similar range with respect to the nth song are extracted. Here, the “predetermined similar range” is a range set in advance to determine that the music information is similar to the extent that natural music switching can be realized when music is continuously played back. . The predetermined similarity range may be set when the device is manufactured, or may be set by the user.

  When a plurality of candidate songs are extracted, the (n + 1) th song is randomly selected from the candidate songs. Here, “select randomly” means that the selection is made without being based on the music information, and may not be completely random.

  As described above, if the n + 1th music is selected, it is possible to effectively prevent only similar music from being selected while realizing natural switching of music. Specifically, for example, since it is possible to avoid selecting only the music having the highest degree of commonness or similarity of the music information, a music group in which the music information varies within an appropriate range is selected. Therefore, it is possible to create a playlist that does not bore the listener.

In another aspect of the play-list creating device according to the present embodiment, further comprising a input means to enter the music selection tendency of the user desires the music selection unit, the music selection unit, the music information to the n-th song Extract a plurality of candidate music pieces within a predetermined similar range, and select the n + 1-th music piece from the plurality of candidate music pieces based on the music selection tendency.

  According to this aspect, when selecting the (n + 1) th song, first, a plurality of candidate songs whose music information is within a predetermined similar range with respect to the nth song are extracted.

  When a plurality of candidate songs are extracted, the (n + 1) th song is selected from the candidate songs based on the music selection tendency input by the user. Here, the “music selection tendency” is a parameter indicating a trend variation in the time series of the music that the user wants to play. For example, the tendency that the music gradually changes so as to gradually increase, For example, there is a tendency that the music changes so as to settle down, or a tendency that the music changes so that the music becomes calm after being raised once.

  As described above, if the (n + 1) th music is selected, a playlist can be created with the intention of the user at the final stage of music selection while realizing natural switching of music. For this reason, a playlist desired by the user can be suitably created.

  In order to solve the above-described problem, the audio device apparatus according to the present embodiment is based on acquisition means for acquiring music information and the music information on the n-th music that is an n-th music (n is a natural number). , A music selection means for selecting the (n + 1) th music that is the music to be reproduced n + 1th, a list creation means for creating a playlist including the nth music and the (n + 1) th music, Output means for mixing and outputting the two music pieces so that at least one of BPM and beat timing is synchronized.

  According to the audio device apparatus according to the present embodiment, the n + 1th music piece is selected based on the music information of the nth music piece, similarly to the playlist creation apparatus described above. For this reason, the music can be switched smoothly, and the music selection that does not bore the listener can be performed.

  In addition, two pieces of music that are continuously played in the playlist are mixed and output so that at least one of BPM and beat timing is synchronized. For this reason, when music is reproduced using the created playlist, more natural music switching can be realized.

  Note that the audio device apparatus according to the present embodiment can also adopt various aspects similar to the various aspects of the playlist creation apparatus described above.

  In order to solve the above-described problem, the playlist creation method according to the present embodiment is based on an acquisition step of acquiring music information and the music information on the n-th music that is an n-th music (n is a natural number). A music selection process for selecting the (n + 1) th music that is the music to be reproduced n + 1th, and a list creation process for creating a playlist including the nth music and the (n + 1) th music.

  According to the playlist creation method according to the present embodiment, the n + 1-th song is selected based on the music information of the n-th song, similarly to the playlist creation device described above. For this reason, the music can be switched smoothly, and the music selection that does not bore the listener can be performed.

  In the playlist creation method according to the present embodiment, it is possible to adopt various aspects similar to the various aspects of the playlist creation apparatus described above.

  In order to solve the above-described problem, the program according to the present embodiment is based on the music information relating to the n-th music that is the music to be reproduced n-th (n is a natural number). Thus, it functions as music selection means for selecting the (n + 1) th music that is the music to be reproduced n + 1th and list creation means for creating a playlist including the nth music and the (n + 1) th music.

  According to the program according to the present embodiment, the n + 1th music is selected based on the music information of the nth music, as in the above-described playlist creation device. For this reason, the music can be switched smoothly, and the music selection that does not bore the listener can be performed.

  Note that the program according to the present embodiment can also adopt various aspects similar to the various aspects of the playlist creation device described above.

  The operation and other gains of the playlist creation device, audio device, playlist creation method, and program according to this embodiment will be described in more detail in the following examples.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Device configuration>
First, the hardware configuration of the audio equipment device according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram illustrating a hardware configuration of the audio equipment device according to the embodiment.

  In FIG. 1, an audio equipment device 100 according to the present embodiment is configured as a device capable of reproducing music data and video data, and has a large-capacity storage 110, a CPU 120, an image processing circuit 130, and an LCD (Liquid Crystal Monitor) 140. , ROM 150, RAM 160, sound processing circuit 170, and speaker 180.

  The large-capacity storage 110 is configured to include a recording medium such as a hard disk, for example, and stores music data and video data to be played back by the audio equipment device 100.

  CPU120 is comprised as a controller unit which can control operation | movement of the audio equipment apparatus 100 whole.

  The image processing circuit 130 is configured to be able to execute various processes for reproducing video data, and outputs the processed video data to the LCD 140. The LCD 140 is configured as a display capable of displaying video according to video data input from the image processing circuit 130.

  The ROM 150 and the RAM 160 are recording media configured to be able to appropriately store various information handled by the audio equipment device 100, and output the stored information to various parts as necessary.

  The sound processing circuit 170 is configured to be able to execute various processes for reproducing music data, and outputs the processed music data to the speaker 180. The speaker 180 is configured to be able to output sound corresponding to the music data input from the sound processing circuit 170.

  Next, the software configuration of the audio apparatus according to the present embodiment will be described with reference to FIG. FIG. 2 is a functional block diagram illustrating the software configuration of the audio equipment device according to the embodiment.

  2, the audio device device 100 according to the present embodiment includes a music data storage unit 210, a music information extraction unit 220, a music information storage unit 230, a music selection control unit 240, and a reproduction control unit 250.

  The music data storage unit 210 is configured as the large-capacity storage 110 described above, for example, and can output music data to the music information extraction unit 220, the music selection control unit 240, and the reproduction control unit 250.

  The music information extraction unit 220 includes a music metadata extraction unit 221 that extracts music metadata (eg, playback length), a music bar / beat position detection unit 222 that detects music bars and beat positions, and music. The music tempo detection unit 223 for detecting the tempo of the music is provided. The music information extraction unit 220 can extract various data related to music from the tag information of the music data stored in the music data storage unit 210 and the result of the music analysis process, and can output the data to the music information storage unit 230. .

  The music information storage unit 230 includes a music metadata storage unit 231 that stores music metadata, a music bar / beat position storage unit 232 that stores music bars and beat positions, and a music tempo detection unit that stores music tempo. 233. The music information storage unit 220 stores various information related to the music extracted by the music information extraction unit 220 and can be output to the music selection control unit 240 as appropriate.

The music selection control unit 240 includes a music selection condition specifying unit 241 that specifies conditions for selecting music constituting the playlist, and a playlist creation unit 242 that creates a playlist based on the music selection conditions. The music selection control unit 240 can create a playlist using the music information stored in the music information storage unit 230 as appropriate, and can output the created playlist to the playback control unit 250.

The playback control unit 250 includes a playback tempo control unit 251, a mixing processing unit 252, and an effect processing unit 253. Playback tempo control unit 2 51, while controlling the reproduction tempo if necessary, to reproduce the music included in the playlist. Also, at the part where the playback music is switched, the previous music and the next music are played while being partially mixed so that the music is not interrupted. Mi Kishingu processing unit 2 52, if necessary, before the song and the tempo of the next music, as well as measure-beat position performs control so as to be aligned with each other. Effect processor 2 53 performs effect processing, such as cross-fade in mix section that performs mixing processing.

<Description of operation>
Next, the operation of the audio equipment device according to the present embodiment will be described with reference to FIGS. FIG. 3 is a flowchart illustrating the operation when creating the playlist of the audio device according to the embodiment. FIG. 4 is a conceptual diagram showing a method for setting music selection conditions for determining the first music piece, and FIG. 5 is a conceptual diagram showing a method for setting music selection conditions for determining the (n + 1) th music piece. FIG. 6 is a conceptual diagram showing a speed scenario setting method. In the following description, among the operations of the audio equipment device according to the present embodiment, the playlist creation process closely related to the present invention will be described in detail, and description of other general operations will be omitted as appropriate. .

  In FIG. 3, when a playlist is created by the audio device 100 according to the present embodiment, first the first music piece to be played is first determined (step S101). The head music is determined based on, for example, a music selection condition designated by the user.

  As shown in FIG. 4, the user can set, for example, a genre and a reference tempo as music selection conditions for determining the first music piece. In this case, the head music is determined at random from the music that matches the reference tempo specified by the user and is the genre specified by the user. Note that the head music may be randomly determined regardless of the music selection conditions, or may be directly selected by the user.

  Returning to FIG. 3, the determined first music piece is set as the nth music piece that serves as a reference when the next music piece is selected (step S102). When the nth music is set, the music information of the nth music is acquired (step S102). As the music information, for example, the tempo, beat position, genre, etc. of the music can be mentioned. The music information may be information obtained from metadata or the like of music data, or may be information obtained by analyzing music data. A plurality of types of music information may be acquired.

  When the music information of the nth music is acquired, a plurality of candidate songs are extracted based on the acquired music information (step S104). For example, when a tempo is used as the music information, a music having a tempo within a certain range (for example, ± 10%) with respect to the tempo of the nth music is extracted as a candidate music. If the number of songs in the range is extremely small, the extraction process may be performed again by expanding the range (for example, ± 15%).

  As shown in FIG. 5, the reference tempo may be specifically set as a numerical range. In the example shown in the figure, the lower limit value of the tempo is set to 120 BPM and the upper limit value is set to 130 BPM. Therefore, a song whose tempo is within the range of 120 BPM to 130 BPM is extracted as a candidate song.

  Returning to FIG. 3 again, when a plurality of candidate music pieces are extracted, it is determined whether or not a music selection tendency is input (step S105). Here, the song selection tendency is set by the user as a parameter such as a speed scenario that shows, in a time series, variations in the tone of music in the progress of a playlist. Note that the melody here is a parameter that represents the tone of the music, and is a parameter that enables each music to be classified, for example, a bright or dark music, an intense music, or a calm music. The tune can be determined based on music information such as tempo and genre.

  In FIG. 5, the speed scenario can be determined by selecting a desired scenario from a plurality of preset scenarios, for example. For example, as shown in the figure, a scenario in which the tone of music is constant, a scenario that gradually rises, a scenario that settles after being raised, a scenario that gradually settles, and the like can be selected. If the speed scenario can be selectively input in this way, it is possible to effectively reduce the burden of the user inputting the music selection tendency.

  In FIG. 6, the speed scenario may be freely settable by the user. Specifically, the user determines the speed scenario by drawing a curve indicating the climax of the music tone on the input screen. In the curves shown in the figure, the vertical axis shows the rising of the tone and the horizontal axis shows the time. If the speed scenario can be input in this manner, the music selection tendency desired by the user can be set in more detail, and a very suitable music selection can be realized.

  Returning to FIG. 3, when the above-mentioned music selection tendency is input (step S105: YES), the (n + 1) th music is selected from the candidate music based on the music selection tendency (step S106). Specifically, the music most suitable for realizing the change of the tone shown in the speed scenario is selected. On the other hand, when the music selection tendency is not input (step S105: NO), the n + 1th music is randomly selected from the candidate music (step S107). Even when the (n + 1) th music is selected at random, the selection target is limited to the candidate music, so that an inappropriate music is not selected.

  When the (n + 1) th song is selected, it is determined whether or not the total number of the selected songs has reached the set number of songs (that is, the number of songs to be included in the playlist) (step S108). Here, if the total number of songs has not reached the set number of songs (step S108: NO), the n + 1th song selected immediately before is set as a new nth song (step S109), and the processing after step S103 is performed. Will be executed again. In this way, music to be played after the selected n + 1th music (that is, n + 2th music, n + 3rd music, etc.) can be determined sequentially. When the total number of songs reaches the set number of songs (step S108: YES), a playlist including a plurality of selected songs is created (step S110).

  The series of processes described above are typically performed before the music is played back, but may be executed during the playback of the music. That is, it may be realized in such a manner that a music piece to be reproduced later is appropriately selected while a music piece is reproduced.

  If a playlist is created as described above, each song included in the playlist can be determined based on the song information of the song played immediately before. For this reason, when music is reproduced using a playlist, smooth music switching can be realized. Specifically, since the (n + 1) -th music to be played next to the n-th music is selected as a music whose music information is similar to that of the (n + 1) -th music, switching to a music having greatly different music information is executed. Discomfort can be reduced.

  Moreover, in the audio equipment device 100 according to the present embodiment, switching from the nth music to the (n + 1) th music is realized by a mixing process using a crossfade. Specifically, in the mix section in which the nth music is switched to the (n + 1) th music, the nth music is faded out and the n + 1th music is faded in. Further, the nth music and the (n + 1) th music are mixed so that the beat positions are synchronized. In this way, when the music is switched by executing the mixing process, the above-described effect of reducing the uncomfortable feeling at the music switching timing is remarkably exhibited.

  Further, in the present embodiment, each music included in the playlist is selected based on only the music information of the previous music in principle (that is, the music is selected without being restricted except for the music information of the previous music). Therefore, it is possible to prevent the selection of only songs having similar music information when viewed in the entire playlist. Therefore, it is possible to suitably prevent only similar music from being played and getting the listener bored.

  As described above, according to the audio equipment device 100 according to the present embodiment, it is possible to realize a smooth switching of music and to create a playlist that does not bore the listener.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and a playlist can be created with such a change. A device, an audio equipment device, a playlist creation method, and a program are also included in the technical scope of the present invention.

100 Audio equipment 110 Mass storage 120 CPU
130 Image processing circuit 140 LCD
150 ROM
160 RAM
170 Sound Processing Circuit 180 Speaker 210 Music Data Storage Unit 220 Music Information Extraction Unit 221 Music Metadata Extraction Unit 222 Music Bar / Beat Position Detection Unit 223 Music Tempo Detection Unit 230 Music Information Storage Unit 231 Music Metadata Storage Unit 232 Music Bar / Beat position storage unit 233 Music tempo storage unit 240 Music selection control unit 241 Music selection condition designation unit 242 Playlist creation unit 250 Playback control unit 251 Playback tempo control unit 252 Mixing processing unit 253 Effect control unit

Claims (7)

Obtaining means for obtaining music information;
music selection means for selecting the (n + 1) th music that is the (n + 1) th music based on the music information relating to the nth music that is the nth (n is a natural number) music;
List creation means for creating a playlist including the nth song and the (n + 1) th song;
A second input means for inputting a music selection tendency desired by the user for the music selection means;
The music selection tendency is a parameter indicating a change in tune in the progress of the playlist in time series,
The music selection means extracts a plurality of candidate music pieces whose music information is within a predetermined similar range with respect to the n-th music piece, and selects the n + 1-th music piece from the plurality of candidate music pieces based on the music selection tendency. A playlist creation device characterized by selecting.   The playlist creation apparatus according to claim 1, wherein the music information includes analysis information obtained by analyzing the music.   The playlist creation apparatus according to claim 1, wherein the music information includes accompanying information stored along with the music.   4. The playlist creation device according to claim 1, wherein the music selection unit selects the n + 1-th music during reproduction of the n-th music. 5.   5. The playlist creation device according to claim 1, further comprising an input unit that allows a user to select the music information used for music selection by the music selection unit. 6. An acquisition step of acquiring music information;
A music selection step of selecting music by a music selection means for selecting the n + 1th music that is the n + 1th music, based on the music information relating to the nth music that is the nth music (n is a natural number),
A list creation step of creating a playlist including the nth song and the (n + 1) th song;
Inputting a music selection tendency desired by the user to the music selection means;
The music selection tendency is a parameter indicating a change in tune in the progress of the playlist in time series,
The music selection means extracts a plurality of candidate music pieces whose music information is within a predetermined similar range with respect to the n-th music piece, and selects the n + 1-th music piece from the plurality of candidate music pieces based on the music selection tendency. A process of selecting
A playlist creation method characterized by comprising: Computer
Obtaining means for obtaining music information;
music selection means for selecting the (n + 1) th music that is the (n + 1) th music based on the music information relating to the nth music that is the nth (n is a natural number) music;
List creation means for creating a playlist including the nth song and the (n + 1) th song;
Means for inputting a music selection tendency desired by the user for the music selection means;
The music selection tendency is a parameter indicating a change in tune in the progress of the playlist in time series,
The music selection means extracts a plurality of candidate music pieces whose music information is within a predetermined similar range with respect to the n-th music piece, and selects the n + 1-th music piece from the plurality of candidate music pieces based on the music selection tendency. Means for selecting
A program characterized by functioning as