======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '158'
                                          'artist'  'The Vikings'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Hallelujah! (Island, 1963; pre-Maytals)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['surf', 'garage rock', 'punk rock', 'punk', 'garage punk']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '27'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '120.974'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000776 000007D5 000031EB 0000321B 00008839 00008839 00006E0D 000075B8 '
 '00001C0F 000023D0')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000099C 00000000006AB954 00000000 003A0783 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '6B12211B+348283+27+150+10436+23602+34731+46689+60862+73801+85696+98525+111155+127254+137548+150703+165429+178388+204642+214068+226758+237191+251825+264237+276892+291929+304606+315251+325986+338275'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '7'
'TBPM' (BPM (beats per minute))                     '120.974'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TENC' (Encoded by)                                 'iTunes 9.2.1'
'TIT2' (Title/songname/content description)         'Hallelujah! (Island, 1963; pre-Maytals)'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Vikings'
'TRCK' (Track number/Position in set)               '7/27'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['surf', 'garage rock', 'punk rock', 'punk', 'garage punk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.38 dB'
'TXXX:replaygain_track_peak'                        '0.542321'

========================== row from database ==========================
                                              'id'  763256
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/The Vikings - Hallelujah! (Island, 1963; pre-Maytals).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  158
                                           'genre'  set-pl-spelling
                                        'filesize'  3810155
                                           'mtime'  1620356444
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  The Vikings
                                     'tag_release'  None
                                       'tag_title'  Hallelujah! (Island, 1963; pre-Maytals)
                                             'bpm'  120.974
                                    'search_title'  '1963':4,5 'hallelujah':1 'island':2,3 'maytals':7 'pre':6 'premaytals':8
                                   'search_artist'  'the':1 'vikings':2
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':12 '0playlists':11 '1963':4A,5A 'hallelujah':1A 'island':2A,3A 'maytals':7A 'pl':16 'pre':6A 'premaytals':8A 'set':15 'spelling':14 'the':9B 'themes':13 'vikings':10B
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'garage rock', 'punk rock', 'punk', 'garage punk']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620356444.2889316  (2021-05-07 05:00:44)
                             'size'  3810155