{
  "year": {
    "description": "Year"
  },
  "track": {
    "description": "Track number on the media, e.g. `{no: 1, of: 2}`"
  },
  "disk": {
    "description": "Disk or media number, e.g. `{no: 1, of: 2}`"
  },
  "title": {
    "description": "Track title"
  },
  "artist": {
    "description": "Literal written track artist e.g.: `\"Beth Hart & Joe Bonamassa\"`. If not directly specified in a tag, this is automatically filled with `common.artists`."
  },
  "artists": {
    "description": "Track artists e.g.: `[\"Beth Hart\", \"Joe Bonamassa\"]`. If not directly specified in one or more tag, this is automatically filled with `common.artist`"
  },
  "albumartist": {
    "description": "Literal written album artist e.g.: `\"Beth Hart & Joe Bonamassa\"`"
  },
  "album": {
    "description": "Album title"
  },
  "tvShow": {
    "description": "TV show title"
  },
  "tvShowSort": {
    "description": "TV show title, formatted for alphabetic ordering"
  },
  "tvSeason": {
    "description": "TV season title"
  },
  "tvEpisode": {
    "description": "TV episode title"
  },
  "tvEpisodeId": {
    "description": "TV episode ID"
  },
  "tvNetwork": {
    "description": "TV network"
  },
  "podcast": {
    "description": "_ToDo, see [issues #13](https://github.com/Borewit/music-metadata/issues/13)_"
  },
  "podcasturl": {
    "description": "_ToDo, see [issues #13](https://github.com/Borewit/music-metadata/issues/13)_"
  },
  "date": {
    "description": "Date, formatted like: YYYY-MM-DD"
  },
  "originaldate": {
    "description": "Original (initial) release date, formatted like: YYYY-MM-DD"
  },
  "originalyear": {
    "description": "Original (initial) release year"
  },
    "releasedate": {
    "description": "Release date, formatted like: YYYY-MM-DD"
  },
  "comment": {
    "description": "Comments"
  },
  "discogs_artist_id": {
    "description": "Discogs artist ID"
  },
  "discogs_label_id": {
    "description": "Discogs label ID"
  },
  "discogs_master_release_id": {
    "description": "Discogs master release ID"
  },
  "discogs_votes": {
    "description": "Discogs votes"
  },
  "discogs_rating": {
    "description": "Discogs rating"
  },
  "genre": {
    "description": "Genres"
  },
  "picture": {
    "description": "Embedded cover art"
  },
  "composer": {
    "description": "Composer"
  },
  "lyrics": {
    "description": "Lyrics"
  },
  "albumsort": {
    "description": "Album title, formatted for alphabetic ordering"
  },
  "titlesort": {
    "description": "Track title, formatted for alphabetic ordering"
  },
  "work": {
    "description": "The canonical title of the [work](https://musicbrainz.org/doc/Work)"
  },
  "artistsort": {
    "description": "Track artist, formatted for alphabetic ordering"
  },
  "albumartistsort": {
    "description": "Album artist, formatted for alphabetic ordering"
  },
  "composersort": {
    "description": "Composer, formatted for alphabetic ordering"
  },
  "lyricist": {
    "description": "Lyricist"
  },
  "writer": {
    "description": "Writer"
  },
  "conductor": {
    "description": "Conductor"
  },
  "remixer": {
    "description": "Remixer(s)"
  },
  "arranger": {
    "description": "Arranger(s)"
  },
  "engineer": {
    "description": "Engineer(s)"
  },
  "producer": {
    "description": "Producer(s)"
  },
  "djmixer": {
    "description": "Mix-DJ(s)"
  },
  "mixer": {
    "description": "Mixed by"
  },
  "label": {
    "description": "Release label name(s)"
  },
  "grouping": {
    "description": "Content group description. Used to group track titles in sections."
  },
  "subtitle": {
    "description": "Contains the subtitle of the content"
  },
  "discsubtitle": {
    "description": "The Media Title given to a specific disc"
  },
  "totaltracks": {
    "description": "The total number of tracks"
  },
  "totaldiscs": {
    "description": "The total number of discs"
  },
  "movementTotal": {
    "description": "The total number of movements"
  },
  "compilation": {
    "description": "Is part of compilation (unofficial iTunes Compilation Flag)"
  },
  "rating": {
    "description": "Object holding rating score [0..1] (0.0 worst rating, 1.0 best rating) and source (e.g. user e-mail)"
  },
  "bpm": {
    "description": "Beats Per Minute (BPM)"
  },
  "mood": {
    "description": "Keywords to reflect the mood of the audio, e.g. \"Romantic\" or \"Sad\""
  },
  "media": {
    "description": "Release format"
  },
  "catalognumber": {
    "description": "[Release catalog number(s)](https://musicbrainz.org/doc/Release/Catalog_Number)"
  },
  "barcode": {
    "description": "[Release barcode](https://musicbrainz.org/doc/Barcode)."
  },
  "isrc": {
    "description": "[ISRC](https://musicbrainz.org/doc/ISRC)"
  },
  "asin": {
    "description": "[Amazon Standard Identification Number (ASIN)](https://musicbrainz.org/doc/ASIN)"
  },
  "releasestatus": {
    "description": "See [releases status](https://wiki.musicbrainz.org/History:Release_Status)"
  },
  "releasetype": {
    "description": "[Release type](https://musicbrainz.org/doc/Release_Group/Type), e,g,: Album"
  },
  "releasecountry": {
    "description": "[Release country](https://wiki.musicbrainz.org/Release_Country) describes the country in which an album was released."
  },
  "script": {
    "description": "[Release Script](https://picard.musicbrainz.org/docs/tags/)"
  },
  "language": {
    "description": "Language used in metadata"
  },
  "copyright": {
    "description": "Contain copyright message for the copyright holder of the original sound, begin with a year and a space character."
  },
  "license": {
    "description": "License Relationship Type (releases, recordings)"
  },
  "encodedby": {
    "description": "Encoded by (person/organisation)"
  },
  "encodersettings": {
    "description": "Encoder Settings"
  },
  "gapless": {
    "description": "Gapless album indicator ([MP4](http://help.mp3tag.de/main_tags.html))"
  },
  "musicbrainz_recordingid": {
    "description": "Release [recording](https://musicbrainz.org/doc/Recording) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_trackid": {
    "description": "Release track [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_albumid": {
    "description": "[Album (release)](https://musicbrainz.org/doc/Release) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_artistid": {
    "description": "Track [artists](https://musicbrainz.org/doc/Artist) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_albumartistid": {
    "description": "Album artists [artists](https://musicbrainz.org/doc/Artist) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_releasegroupid": {
    "description": "[Release group](https://musicbrainz.org/doc/Release_Group) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_workid": {
    "description": "[Work](https://musicbrainz.org/doc/Work) [MBID](https://musicbrainz.org/doc/MusicBrainz_Identifier)"
  },
  "musicbrainz_trmid": {
    "description": "[TRM (TRM Recognizes Music)]((https://musicbrainz.org/doc/Fingerprinting#TRM)) IDs were MusicBrainz’ first audio fingerprinting system."
  },
  "musicbrainz_discid": {
    "description": "[Disc ID](https://musicbrainz.org/doc/Disc_ID) is the code number which MusicBrainz uses to link a physical CD"
  },
  "acoustid_id": {
    "description": "(AcoustID)[https://en.wikipedia.org/wiki/Acoustic_fingerprint] is MusicBrainz’ third and most recent audio fingerprinting system."
  },
  "acoustid_fingerprint": {
    "description": "[AcoustID Fingerprint](https://picard.musicbrainz.org/docs/mappings/). _ToDo: Same as acoustid_id._"
  },
  "musicip_puid": {
    "description": "[PUIDs](https://musicbrainz.org/doc/Fingerprinting#PUID) were MusicBrainz’ second audio fingerprinting system."
  },
  "musicip_fingerprint": {
    "description": "MusicIP Fingerprint), not sure which algorithm."
  },
  "website": {
    "description": "URL of website"
  },
  "performer:instrument": {
    "description": "Performer relationship types, instrument can also be vocals."
  },
  "averageLevel": {
    "description": "Average gain level."
  },
  "peakLevel": {
    "description": "Peak gain level."
  },
  "notes": {
    "description": "Similar to comments"
  },
  "description": {
    "description": "Description"
  },
  "key": {
    "description": "The 'Initial key' frame contains the musical key in which the sound starts."
  },
  "originalalbum": {
    "description": "Original release title of the earliest release in the release group intended for the title of the original recording."
  },
  "originalartist": {
    "description": "Original track artist of the earliest release in the release group intended for the performer(s) of the original recording."
  },
  "discogs_release_id": {
    "description": "Discogs release identifier"
  },
  "replaygain_track_peak": {
    "description": "ReplayGain track peak: {ratio: number, dB: number}"
  },
  "replaygain_track_gain": {
    "description": "ReplayGain track gain: {ratio: number, dB: number}"
  },
  "replaygain_album_peak": {
    "description": "ReplayGain album peak: {ratio: number, dB: number}"
  },
  "replaygain_album_gain": {
    "description": "ReplayGain album gain: {ratio: number, dB: number}"
  },
  "replaygain_track_minmax": {
    "description": "Minimum & maximum global gain values for this file."
  },
  "replaygain_album_minmax": {
    "description": "Minimum & maximum global gain values across a set of files scanned as an album. "
  },
  "replaygain_undo": {
    "description": "The global gain adjustment to restore the original values in the left and right channels, respectively, followed by an indicator of whether to wrap"
  },
  "technician": {
    "description": "Technician who digitized subject"
  },
  "category": {
    "description": "Podcast Category"
  },
  "hdVideo": {
    "description": "iTunes Video Quality (2=Full HD, 1=HD, 0=SD)"
  },
  "keywords": {
    "description": "Podcast Keywords"
  },
  "movement": {
    "description": "Movement"
  },
  "movementIndex": {
    "description": "Movement Index/Total, e.g. `{no: 1, of: 4}`"
  },
  "podcastId": {
    "description": "Podcast Identifier"
  },
  "showMovement": {
    "description": "Show Movement"
  },
  "stik": {
    "description": "iTunes Media Type (1=Normal, 2=Audiobook, 6=Music Video, 9=Movie, 10=TV Show, 11=Booklet, 14=Ringtone, https://github.com/sergiomb2/libmp4v2/wiki/iTunesMetadata#user-content-media-type-stik)"
  },
  "longDescription": {
    "description": "Long description or synopsis"
  }
}
