======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '455'
                                          'artist'  'Caravan'
                                     'text_people'  'Dave Sinclair; Pye Hastings; Richard Coughlan; Richard Sinclair'
                                         'release'  '60s - 70s Poppy Vocal Stuff'
                                           'title'  'Winter Wine'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  ("['progressive', 'canterbury scene', 'canterbury', 'rock', 'progressive "
 "rock', 'classic rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '98.454'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'E\x00+\x009\x006\x00+\x003\x007\x00F\x000\x00+\x007\x007\x005\x009\x00+\x00A\x00F\x00B\x001\x00+\x001\x002\x00D\x001\x00B\x00+\x001\x006\x00F\x004\x003\x00+\x001\x00D\x00D\x00E\x00D\x00+\x002\x004\x005\x001\x005\x00+\x002\x00F\x008\x001\x009\x00+\x003\x002\x00D\x007\x009\x00+\x003\x009\x007\x000\x001\x00+\x004\x001\x007\x005\x00F\x00+\x004\x006\x004\x00E\x00E\x00+\x004\x00C\x000\x001\x001\x00+\x005\x004\x005\x00C\x001\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     '60s - 70s Poppy Vocal Stuff'
'TBPM' (BPM (beats per minute))                     '98.454'
'TCOM' (Composer)                                   'Dave Sinclair; Pye Hastings; Richard Coughlan; Richard Sinclair'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Winter Wine'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Caravan'
'TPE2' (Band/orchestra/accompaniment)               'Caravan'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive',
 'canterbury scene',
 'canterbury',
 'rock',
 'progressive rock',
 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                        '+0.85 dB'
'TXXX:replaygain_track_peak'                        '0.595382'

========================== row from database ==========================
                                              'id'  1343539
                                            'path'  /data/Music/Bulk/00poprockelectronic/60s Pop/07 Caravan - Winter Wine.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  455
                                           'genre'  rock-cppex
                                        'filesize'  10937442
                                           'mtime'  1620737011
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 07 rock cppex
                                      'tag_artist'  Caravan
                                     'tag_release'  60s - 70s Poppy Vocal Stuff
                                       'tag_title'  Winter Wine
                                             'bpm'  98.454
                                    'search_title'  'wine':2 'winter':1
                                   'search_artist'  'caravan':1
                                  'search_release'  '60s':1 '70s':2 'poppy':3 'stuff':5 'vocal':4
                                     'search_rest'  '00poprockelectronic':1 'cppex':3 'rock':2
                                    'search_combo'  '00poprockelectronic':9 '60s':4C '70s':5C 'caravan':3B 'cppex':11 'poppy':6C 'rock':10 'stuff':8C 'vocal':7C 'wine':2A 'winter':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['progressive', 'canterbury scene', 'canterbury', 'rock', 'progressive rock', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737010.8275054  (2021-05-11 14:43:30)
                             'size'  10937442