======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '71'
                                          'artist'  'Anathema'
                                     'text_people'  ''
                                         'release'  'Resonance'
                                           'title'  'Horses'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-progressive'
                                             'bpm'  '99.080'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Resonance'
'TBPM' (BPM (beats per minute))                     '99.080'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-progressive'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Horses'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Anathema'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.80 dB'
'TXXX:replaygain_track_peak'                        '0.935924'

========================== row from database ==========================
                                              'id'  1392371
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Anathema - Resonance/Resonance-15-Horses.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  71
                                           'genre'  eid-metal-progressive
                                        'filesize'  1707904
                                           'mtime'  1620310856
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 15 eid metal progressive
                                      'tag_artist'  Anathema
                                     'tag_release'  Resonance
                                       'tag_title'  Horses
                                             'bpm'  99.08
                                    'search_title'  'horses':1
                                   'search_artist'  'anathema':1
                                  'search_release'  'resonance':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':3 'metal':4 'progressive':5
                                    'search_combo'  '00dwimp':4 '00metal':5 'anathema':2B 'eid':6 'horses':1A 'metal':7 'progressive':8 'resonance':3C
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310855.6607103  (2021-05-06 16:20:55)
                             'size'  1707904