======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '260'
                                          'artist'  'Psychic Youth'
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                                           'title'  'Step in Time'
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                                      'lastfmtags'  "['new wave', 'minimal wave', 'synthpop', 'synth', 'minimal synth']"
                                     'discogstags'  "['new wave', 'electronic', 'synth-pop', 'minimal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '18'
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '142'
                                             'key'  '6A'
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rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Step in Time'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD-R'
'TPE1' (Lead performer(s)/Soloist(s))               'Psychic Youth'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'A Tribute to Some Bizarre'
'TRCK' (Track number/Position in set)               '14/18'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Psychic Youth'
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'TXXX:Artists'                                      'Psychic Youth'
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'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '162228d2-8b45-4cfa-9125-09037cdd5e6d'
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'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '4d97c76b-9ad9-4f37-a6f1-fc673f0861ca'
'TXXX:MusicBrainz Release Group Id'                 '9047bd56-cb0c-4279-9be4-7a9eb4959b54'
'TXXX:MusicBrainz Release Track Id'                 '60598555-136b-3eae-b7a7-9e504f29aa81'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['new wave', 'electronic', 'synth-pop', 'minimal']
'TXXX:lastfmtags'                                   ['new wave', 'minimal wave', 'synthpop', 'synth', 'minimal synth']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.402688'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/A Tribute To Some Bizarre/A Tribute To Some Bizarre Vol. 8 [vBr]/14-psychic youth-step in time.mp3
                                         'working'  None
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                                    'duration_sec'  260
                                           'genre'  electronic-unsorted
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                                           'mtime'  1647348719
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm To To Vol. [vBr] 14 psychic youth step time electronic unsorted
                                      'tag_artist'  Psychic Youth
                                     'tag_release'  A Tribute to Some Bizarre, Volume 8
                                       'tag_title'  Step in Time
                                             'bpm'  142.0
                                    'search_title'  'in':2 'step':1 'time':3
                                   'search_artist'  'psychic':1 'youth':2
                                  'search_release'  '8':8 'a':1 'bizarre':5,6 'some':4 'to':3 'tribute':2 'volume':7
                                     'search_rest'  'br':14,15 'electronic':10 'psychic':6 'step':8 'time':9 'to':1 'unsorted':11 'v':12,13 'vbr':4,5 'vol':2,3 'youth':7
                                    'search_combo'  '8':13C 'a':6C 'bizarre':10C,11C 'br':27,28 'electronic':23 'in':2A 'psychic':4B,19 'some':9C 'step':1A,21 'time':3A,22 'to':8C,14 'tribute':7C 'unsorted':24 'v':25,26 'vbr':17,18 'vol':15,16 'volume':12C 'youth':5B,20
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']
                                      'lastfmtags'  ['new wave', 'minimal wave', 'synthpop', 'synth', 'minimal synth']
                                        'tag_date'  1980
                                     'discogstags'  ['new wave', 'electronic', 'synth-pop', 'minimal']

============================== file details ==============================
                                           'mtime'  1647348718.736697  (2022-03-15 13:51:58)
                             'size'  4238778