======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '246'
                                          'artist'  'Europe'
                                     'text_people'  ''
                                         'release'  'Prisoners in paradise'
                                           'title'  'Halfway to heaven'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']"
                                     'discogstags'  "['trance', 'techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '126.806'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Prisoners in paradise'
'TBPM' (BPM (beats per minute))                     '126.806'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Halfway to heaven'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Europe'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['trance', 'techno', 'electronic']
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.90 dB'
'TXXX:replaygain_track_peak'                        '0.506311'

========================== row from database ==========================
                                              'id'  1339154
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0266 Europe - Definitive Collection/16 - Halfway To Heaven.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  246
                                           'genre'  rock-cppex-classic
                                        'filesize'  3948056
                                           'mtime'  1636039392
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0266 Definitive Collection 16 To Heaven rock cppex classic
                                      'tag_artist'  Europe
                                     'tag_release'  Prisoners in paradise
                                       'tag_title'  Halfway to heaven
                                             'bpm'  126.806
                                    'search_title'  'halfway':1 'heaven':3 'to':2
                                   'search_artist'  'europe':1
                                  'search_release'  'in':2 'paradise':3 'prisoners':1
                                     'search_rest'  '00poprockelectronic':1 '0266':5 '1000':4 'album':2 'classic':12 'collection':7 'cppex':11 'definitive':6 'heaven':9 'rock':10 'to':8 'top':3
                                    'search_combo'  '00poprockelectronic':8 '0266':12 '1000':11 'album':9 'classic':19 'collection':14 'cppex':18 'definitive':13 'europe':4B 'halfway':1A 'heaven':3A,16 'in':6C 'paradise':7C 'prisoners':5C 'rock':17 'to':2A,15 'top':10
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  ['trance', 'techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1636039391.8539708  (2021-11-04 16:23:11)
                             'size'  3948056