======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '239'
                                          'artist'  'D4L'
                                     'text_people'  ''
                                         'release'  'sweets'
                                           'title'  'Laffy Taffy (F; gl)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dirty south', 'american', 'hip hop', 'rap', 'snap music']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  '28'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '103.642'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ['0',
 ' 00000AC0 00000856 0000778D 000078DC 0001212F 0000FCC1 000076F5 0000750B '
 '0000E182 0000E239',
 ' 00000000 00000210 0000075C 0000000000A16B14 00000000 0057CA4A 00000000 '
 '00000000 00000000 00000000 00000000 00000000']
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunes_CDDB_1:eng'                            '9512511C+351891+28+150+3144+12958+27740+40665+50101+62938+72029+84647+113606+130944+141795+157675+165844+179071+188564+201045+213244+224630+236427+249262+267253+284311+297260+306974+318947+329461+340302'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '21'
'PRIV:AverageLevel:{\x18\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x18\x00\x00')
'PRIV:PeakValue:!{\x00\x00'                         PRIV(owner='PeakValue', data=b'!{\x00\x00')
'TALB' (Album/Movie/Show title)                     'sweets'
'TBPM' (BPM (beats per minute))                     '103.642'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Laffy Taffy (F; gl)'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'D4L'
'TRCK' (Track number/Position in set)               '21/28'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['dirty south', 'american', 'hip hop', 'rap', 'snap music']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.10 dB'
'TXXX:replaygain_track_peak'                        '0.480964'

========================== row from database ==========================
                                              'id'  735827
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/D4L - Laffy Taffy (F; gl).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  239
                                           'genre'  set-th-candy
                                        'filesize'  5760562
                                           'mtime'  1621695579
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country set th candy
                                      'tag_artist'  D4L
                                     'tag_release'  sweets
                                       'tag_title'  Laffy Taffy (F; gl)
                                             'bpm'  103.642
                                    'search_title'  'f':3,4 'gl':5,6 'laffy':1 'taffy':2
                                   'search_artist'  'd4l':1
                                  'search_release'  'sweets':1
                                     'search_rest'  'candy':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':5 'th':6
                                    'search_combo'  'candy':15 'country':12 'd4l':7B 'exotica':10 'f':3A,4A 'gl':5A,6A 'jazz':9 'laffy':1A 'oldies':11 'set':13 'sweets':8C 'taffy':2A 'th':14
                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dirty south', 'american', 'hip hop', 'rap', 'snap music']
                                        'tag_date'  
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1621695578.9565232  (2021-05-22 16:59:38)
                             'size'  5760562