jspf

Javascript Portable Playlist Format

The ListenBrainz team is currently working to create Playlist support and we've chosen JSPF as our playlist transport format. This format will be used for importing/exporting playlists, in our API and internally between our web servers and the client browser sessions.

There are a number of fields that we require that are not part of JSPF/XSPF, so we've defined two extensions to JSPF. Our proposed format example is here:

{
   "playlist" : {
      "extension" : {
         "https://musicbrainz.org/doc/jspf#playlist" : {
            "created_for" : "Mr_Monkey",
            "collaborators" : [
               "rob",
               "alastairp",
               "zas"
            ],
            "copied_from" : "https://listenbrainz.org/playlist/9dae92c5-c98e-4e7e-9c15-8b6d32607aed",
            "public" : "true"
         }
      },
      "creator" : "ListenBrainz Troi",
      "date" : "2005-01-08T17:10:47-05:00",
      "title" : "1980s flashback jams",
      "track" : [
         {
            "title" : "Gold",
            "identifier" : "https://musicbrainz.org/recording/e8f9b188-f819-4e43-ab0f-4bd26ce9ff56",
            "creator" : "Spandau Ballet",
            "extension" : {
               "https://musicbrainz.org/doc/jspf#track" : {
                  "added_by" : "zas",
                  "artist_identifier" : [
                     "https://musicbrainz.org/artist/4c0d9acf-a8a1-4765-9c56-05f92f68c048"
                  ],
                  "added_at" : "2020-11-27T10:45:49+00:00",
                  "release_identifier" : "https://musicbrainz.org/release/8d3acbb4-c541-4324-a124-a670615f0f77"
               }
            },
            "album" : "True"
         }
      ],
      "identifier" : "https://listenbrainz.org/playlist/7f4cf4d3-f5ca-453a-b5c8-00e8a30a9bac"
   }
}

playlist

The https://musicbrainz.org/doc/jspf#playlist namespace defines the following fields that augment the data about a playlist:

• created_for: Which ListenBrainz user was the playlist generated for? This is for music recommendation bots generating playlists for users.
• collaborators: Who are the ListenBrainz users who have access to edit this playlist?
• copied_from: This field identifies a playlist, using the identifier syntax, from which this playlist was copied from.
• public: Indicates if this playlist is public or private. Must contain the value "true" or "false".

track

The https://musicbrainz.org/doc/jspf#track namespace defines the following fields that augment the data about a particular track:

• added_by: The ListenBrainz user who added this track.
• artist_identifiers: A list of MusicBrainz Artist URIs that identify the artist that are part of the MusicBrainz artist credit id for this track.
• added_at: The timestamp for when this track was added to the playlist.
• release_identifier: The MusicBrainz ID URI for the release that contained this track.