======================== unified (from filesystem) ========================
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                                        'duration'  '120'
                                          'artist'  'Keith Courvale'
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                                           'title'  'Trapped Love'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '16'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '122.659'
                                             'key'  '12B'
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======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TBPM' (BPM (beats per minute))                     '122.659'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Trapped Love'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Keith Courvale'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Born Bad Records'
'TRCK' (Track number/Position in set)               '4/16'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Courvale, Keith'
'TXXX:Acoustid Id'                                  '72279546-a71b-4081-a076-1f5b9cf097b1'
'TXXX:Artists'                                      'Keith Courvale'
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'TXXX:MusicBrainz Album Id'                         '3bba1eb7-4127-4df5-8f83-804345876a37'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '18575529-b343-4f38-9543-52517d4ff79a'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['folk, world, & country', 'rock']
'TXXX:lastfmtags'                                   ['rockabilly', 'rock and roll', 'all', 'spotify', 'rock']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.171110'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6f89f67d-2eca-48cc-be65-e5f7b4be750b')

========================== row from database ==========================
                                              'id'  947365
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Born Bad Vol. 8/04. Keith Courvale - Trapped Love.mp3
                                         'working'  None
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                                    'duration_sec'  120
                                           'genre'  rock-pop-early
                                        'filesize'  2997020
                                           'mtime'  1620736615
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                                        'rest_str'   00blues jazz exotica oldies country Vol. 04. rock pop early
                                      'tag_artist'  Keith Courvale
                                     'tag_release'  Born Bad, Volume 8
                                       'tag_title'  Trapped Love
                                             'bpm'  122.659
                                    'search_title'  'love':2 'trapped':1
                                   'search_artist'  'courvale':2 'keith':1
                                  'search_release'  '8':5 'bad':2,3 'born':1 'volume':4
                                     'search_rest'  '04':7,8 'country':4 'early':11 'exotica':2 'jazz':1 'oldies':3 'pop':10 'rock':9 'vol':5,6
                                    'search_combo'  '04':16,17 '8':9C 'bad':6C,7C 'born':5C 'country':13 'courvale':4B 'early':20 'exotica':11 'jazz':10 'keith':3B 'love':2A 'oldies':12 'pop':19 'rock':18 'trapped':1A 'vol':14,15 'volume':8C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'rock and roll', 'all', 'spotify', 'rock']
                                        'tag_date'  2003
                                     'discogstags'  ['folk, world, & country', 'rock']

============================== file details ==============================
                                           'mtime'  1620736615.4310634  (2021-05-11 14:36:55)
                             'size'  2997020