======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '201'
                                          'artist'  'ABBA'
                                     'text_people'  ''
                                         'release'  'Abba Gold (Greatest Hits)'
                                           'title'  'S.o.s.'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['swedish', '80s', '70s', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '127.605'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Abba Gold (Greatest Hits)'
'TBPM' (BPM (beats per minute))                     '127.605'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'S.o.s.'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'ABBA'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swedish', '80s', '70s', 'pop', 'disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.567441'

========================== row from database ==========================
                                              'id'  1404650
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Abba/10 - Abba - S.o.s..mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  201
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  4842972
                                           'mtime'  1620558286
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 10 electronic we disco or italo
                                      'tag_artist'  ABBA
                                     'tag_release'  Abba Gold (Greatest Hits)
                                       'tag_title'  S.o.s.
                                             'bpm'  127.605
                                    'search_title'  'o':2 's':1,3 'sos':4
                                   'search_artist'  'abba':1
                                  'search_release'  'abba':1 'gold':2 'greatest':3,4 'hits':5,6
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'disco':7 'electronic':5 'generic':2 'italo':9 'or':8 'trapbeat':4 'we':6
                                    'search_combo'  '00poprockelectronic':12 'abba':5B,6C 'dance':14 'disco':18 'electronic':16 'generic':13 'gold':7C 'greatest':8C,9C 'hits':10C,11C 'italo':20 'o':2A 'or':19 's':1A,3A 'sos':4A 'trapbeat':15 'we':17
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-4', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['swedish', '80s', '70s', 'pop', 'disco']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558285.826008  (2021-05-09 13:04:45)
                             'size'  4842972