======================== unified (from filesystem) ========================
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                                        'duration'  '103'
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                                      'lastfmtags'  "['jazz', 'hip hop', 'funk', 'rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '19'
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
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                                             'key'  '5A'
                                        'acoustid'  '9fd68f9c-e262-40ba-a4fb-c5bff9859d39'
rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '91.556'
'TCOM' (Composer)                                   'Madlib'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDOR' (Original release time)                      '2010'
'TDRC' (Recording time)                             '2010-03-23'
'TENC' (Encoded by)                                 'dBpoweramp Release 13.2'
'TIT2' (Title/songname/content description)         'Red, Black and Green Showcase'
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'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Madlib'
'TPE2' (Band/orchestra/accompaniment)               'Madlib'
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'TPUB' (Publisher)                                  'Madlib Invazion'
'TRCK' (Track number/Position in set)               '2/19'
'TSO2'                                              'Madlib'
'TSOP' (Performer sort order)                       'Madlib'
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'TXXX:Q-UNU'                                        '1'
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'TXXX:lastfmtags'                                   ['jazz', 'hip hop', 'funk', 'rap']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
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'TXXX:q-mixbeat'                                    '3'
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
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'TXXX:replaygain_track_gain'                        '-0.97 dB'
'TXXX:replaygain_track_peak'                        '0.639443'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00localcharacter/00africa/(2010) medicine show no. 3 - beat konducta in africa/20 - madlib - red, black and green showcase.mp3
                                         'working'  None
                                         'bitrate'  255
                                    'duration_sec'  103
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  3493142
                                           'mtime'  1620526864
                                   'redo_metaread'  0
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                                      'tag_artist'  Madlib
                                     'tag_release'  Medicine Show No. 3: Beat Konducta in Africa
                                       'tag_title'  Red, Black and Green Showcase
                                             'bpm'  91.556
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                                   'search_artist'  'madlib':1
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                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'hip hop', 'funk', 'rap']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526864.489929  (2021-05-09 04:21:04)
                             'size'  3493142