======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '227'
                                          'artist'  'ABBA'
                                     'text_people'  ''
                                         'release'  'More Abba Gold (More Abba Hits'
                                           'title'  'Head over Heels'
                                           '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['swedish', '80s', '70s', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '121.555'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'More Abba Gold (More Abba Hits'
'TBPM' (BPM (beats per minute))                     '121.555'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Head over Heels'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'ABBA'
'TRCK' (Track number/Position in set)               '14'
'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'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.50 dB'
'TXXX:replaygain_track_peak'                        '1.020018'

========================== row from database ==========================
                                              'id'  1405054
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Abba/More Abba Gold/14 - Abba - Head over Heels.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  227
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  5461491
                                           'mtime'  1620558285
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 14 electronic we disco italo
                                      'tag_artist'  ABBA
                                     'tag_release'  More Abba Gold (More Abba Hits
                                       'tag_title'  Head over Heels
                                             'bpm'  121.555
                                    'search_title'  'head':1 'heels':3 'over':2
                                   'search_artist'  'abba':1
                                  'search_release'  'abba':2 'gold':3 'hits':5 'more':1,4
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'disco':7 'electronic':5 'generic':2 'italo':8 'trapbeat':4 'we':6
                                    'search_combo'  '00poprockelectronic':10 'abba':4B,6C 'dance':12 'disco':16 'electronic':14 'generic':11 'gold':7C 'head':1A 'heels':3A 'hits':9C 'italo':17 'more':5C,8C 'over':2A 'trapbeat':13 'we':15
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  12A
                                           '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-4', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-4', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['swedish', '80s', '70s', 'pop', 'disco']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558284.8499675  (2021-05-09 13:04:44)
                             'size'  5461491