======================== unified (from filesystem) ========================
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                                        'duration'  '168'
                                          'artist'  'Dave Matthews'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '14'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '95'
                                             'key'  '11B'
                                        'acoustid'  '02f6285e-1789-477e-873c-b2e63357af38'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000879 00000258 00008871 0000A93F 0001E8AC 0000F639 00007F7E 00008295 '
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'COMM:iTunes_CDDB_IDs:eng'                          '14+9012A1A6B0337ED89A8C77565C80849B+3279495'
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'TCMP'                                              '1'
'TCOM' (Composer)                                   'David J. Matthews'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-09-23'
'TENC' (Encoded by)                                 'iTunes v6.0.2.23'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Stephen Harris']])
'TIT2' (Title/songname/content description)         'Oh'
'TKEY' (Initial key)                                '11B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Matthews'
'TPE2' (Band/orchestra/accompaniment)               'Dave Matthews'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '10/14'
'TSO2'                                              'Matthews, Dave'
'TSOP' (Performer sort order)                       'Matthews, Dave'
'TSRC' (ISRC (international standard recording code))  'USRC10301323'
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'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
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'TXXX:Q-UNU'                                        '1'
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'TXXX:discogstags'                                  ['rock', 'alternative rock', 'pop rock']
'TXXX:lastfmtags'                                   ['jam', 'rock', 'acoustic', 'alternative', 'singer songwriter']
'TXXX:q-bass'                                       '4'
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'TXXX:q-chart'                                      '3'
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'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
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'TXXX:replaygain_track_gain'                        '-0.64 dB'
'TXXX:replaygain_track_peak'                        '0.549665'
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========================== row from database ==========================
                                              'id'  1378321
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Dave Matthews - (2003) Some Devil (limited edition)/1-10 Oh.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  168
                                           'genre'  ifs-songwriter
                                        'filesize'  3735010
                                           'mtime'  1636401753
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos (2003) (limited edition) 1 10 ifs songwriter
                                      'tag_artist'  Dave Matthews
                                     'tag_release'  Some Devil
                                       'tag_title'  Oh
                                             'bpm'  95.0
                                    'search_title'  'oh':1
                                   'search_artist'  'dave':1 'matthews':2
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                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jam', 'rock', 'acoustic', 'alternative', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'alternative rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636401752.9004166  (2021-11-08 21:02:32)
                             'size'  3735010