======================== unified (from filesystem) ========================
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                                        'duration'  '49'
                                          'artist'  '(510) BAD-SMUT'
                                     'text_people'  ''
                                         'release'  'Your Guide To The Rock Apocalypse'
                                           'title'  '(501) BAD-SMUT #1'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-UNU-1', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '37'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex-experimental or noise'
                                             'bpm'  '113.073'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 00000AE5 00000AE5 00006362 00006362 0000A61F 0000A61F 00008A74 00008A74 '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A08 000000000020FFE8 00000000 001DD8D1 00000000 '
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'COMM:iTunes_CDDB_1:eng'                            '1511FD25+345530+37+150+15786+24244+30128+33806+43823+52062+57847+68077+77180+84787+91713+102517+114994+119952+135658+144567+158758+160478+171487+181995+186610+191374+196960+199869+205345+207326+218170+224833+232766+244381+256026+261540+263921+300695+316942+330502'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '4'
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'TBPM' (BPM (beats per minute))                     '113.073'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-experimental or noise'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes 9.0'
'TIT2' (Title/songname/content description)         '(501) BAD-SMUT #1'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               '(510) BAD-SMUT'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '4/37'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.88 dB'
'TXXX:replaygain_track_peak'                        '0.383500'

========================== row from database ==========================
                                              'id'  1300581
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/S.P.A.M.pler [Your Guide To The Rock Apocalypse] (2000)/04 (501) BAD-SMUT #1.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  49
                                           'genre'  rock-cppex-experimental or noise
                                        'filesize'  1966457
                                           'mtime'  1676152100
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock S.P.A.M.pler [Your Apocalypse] (2000) 04 rock cppex experimental or noise
                                      'tag_artist'  (510) BAD-SMUT
                                     'tag_release'  Your Guide To The Rock Apocalypse
                                       'tag_title'  (501) BAD-SMUT #1
                                             'bpm'  113.073
                                    'search_title'  '1':6,7 '501':1,2 'bad':3 'badsmut':5 'smut':4
                                   'search_artist'  '510':1,2 'bad':3 'badsmut':5 'smut':4
                                  'search_release'  'apocalypse':6 'guide':2 'rock':5 'the':4 'to':3 'your':1
                                     'search_rest'  '00poprockelectronic':1 '2000':14,15 'a':6 'apocalypse':12,13 'cppex':17 'experimental':18 'indierock':3 'm':7 'noise':20 'or':19 'p':5 'pler':8 'poprock':2 'rock':16 's':4 'spampler':9 'your':10,11
                                    'search_combo'  '00poprockelectronic':19 '1':6A,7A '2000':32,33 '501':1A,2A '510':8B,9B 'a':24 'apocalypse':18C,30,31 'bad':3A,10B 'badsmut':5A,12B 'cppex':35 'experimental':36 'guide':14C 'indierock':21 'm':25 'noise':38 'or':37 'p':23 'pler':26 'poprock':20 'rock':17C,34 's':22 'smut':4A,11B 'spampler':27 'the':16C 'to':15C 'your':13C,28,29
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676152100.0874145  (2023-02-11 22:48:20)
                             'size'  1966457