======================== unified (from filesystem) ========================
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                                        'duration'  '209'
                                          'artist'  'Thus:Owls'
                                     'text_people'  ''
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                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  "['indie', 'swedish', 'alternative', 'folk', 'experimental']"
                                     'discogstags'  "['rock', 'art rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '11'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie'
                                             'bpm'  '113.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

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 '0001650A 0001ABA7')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A5C 00000000008D0894 00000000 007FD688 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '11+102B16DCF65523C0F83347DD9C834FB1+12526861'
'TALB' (Album/Movie/Show title)                     'Cardiac Malformations'
'TBPM' (BPM (beats per minute))                     '113.8'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes 8.2.1'
'TIT2' (Title/songname/content description)         'Sometimes'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Thus:Owls'
'TRCK' (Track number/Position in set)               '4/11'
'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:discogstags'                                  ['rock', 'art rock']
'TXXX:lastfmtags'                                   ['indie', 'swedish', 'alternative', 'folk', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.03 dB'
'TXXX:replaygain_track_peak'                        '0.498110'

========================== row from database ==========================
                                              'id'  1249030
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Thus:Owls - Thus Owls/Cardiac Malformations/04 sometimes.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  209
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  8388560
                                           'mtime'  1637330522
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 04 sometimes ifs songwriter indie
                                      'tag_artist'  Thus:Owls
                                     'tag_release'  Cardiac Malformations
                                       'tag_title'  Sometimes
                                             'bpm'  113.8
                                    'search_title'  'sometimes':1
                                   'search_artist'  'owls':2 'thus':1 'thusowls':3
                                  'search_release'  'cardiac':1 'malformations':2
                                     'search_rest'  '00singer':1 'eos':3 'ifs':5 'indie':6 'sometimes':4 'songwriter':2
                                    'search_combo'  '00singer':7 'cardiac':5C 'eos':9 'ifs':11 'indie':12 'malformations':6C 'owls':3B 'sometimes':1A,10 'songwriter':8 'thus':2B 'thusowls':4B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'swedish', 'alternative', 'folk', 'experimental']
                                        'tag_date'  2009
                                     'discogstags'  ['rock', 'art rock']

============================== file details ==============================
                                           'mtime'  1637330522.1664171  (2021-11-19 15:02:02)
                             'size'  8388560