======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '226'
                                          'artist'  'Europe'
                                     'text_people'  ''
                                         'release'  'The final countdown (re-master'
                                           'title'  'Danger on the track'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']"
                                     'discogstags'  "['trance', 'techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-gr-hard'
                                             'bpm'  '97.318'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The final countdown (re-master'
'TBPM' (BPM (beats per minute))                     '97.318'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-hard'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Danger on the track'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Europe'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['trance', 'techno', 'electronic']
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.467410'

========================== row from database ==========================
                                              'id'  1321203
                                            'path'  /data/Music/Bulk/00dwimp/Europe/The final countdown (re-master)/Europe - Danger on the track.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  226
                                           'genre'  rock-gr-hard
                                        'filesize'  3626481
                                           'mtime'  1622757776
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp master) rock gr hard
                                      'tag_artist'  Europe
                                     'tag_release'  The final countdown (re-master
                                       'tag_title'  Danger on the track
                                             'bpm'  97.318
                                    'search_title'  'danger':1 'on':2 'the':3 'track':4
                                   'search_artist'  'europe':1
                                  'search_release'  'countdown':3 'final':2 'master':5 're':4 'remaster':6 'the':1
                                     'search_rest'  '00dwimp':1 'gr':5 'hard':6 'master':2,3 'rock':4
                                    'search_combo'  '00dwimp':12 'countdown':8C 'danger':1A 'europe':5B 'final':7C 'gr':16 'hard':17 'master':10C,13,14 'on':2A 're':9C 'remaster':11C 'rock':15 'the':3A,6C 'track':4A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  ['trance', 'techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1622757776.2688065  (2021-06-04 00:02:56)
                             'size'  3626481