======================== unified (from filesystem) ========================
                                         'bitrate'  '228.4'
                                        'duration'  '343'
                                          'artist'  'Biosphere'
                                     'text_people'  ''
                                         'release'  'Cirque'
                                           'title'  'Algae & Fungi part 1'
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'im-calmer'
                                             'bpm'  '85.4'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'B\x00+\x009\x006\x00+\x004\x007\x00A\x009\x00+\x00A\x00A\x002\x00C\x00+\x00B\x008\x004\x00B\x00+\x001\x001\x002\x009\x00F\x00+\x001\x002\x005\x006\x003\x00+\x001\x008\x00D\x004\x007\x00+\x002\x000\x001\x00F\x008\x00+\x002\x002\x00C\x008\x00B\x00+\x002\x009\x001\x000\x00D\x00+\x002\x00E\x00E\x003\x006\x00+\x003\x004\x003\x00C\x001\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Cirque'
'TBPM' (BPM (beats per minute))                     '85.4'
'TCON' (Content type, a.k.a. Genre)                 'im-calmer'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Algae & Fungi part 1'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Biosphere'
'TRCK' (Track number/Position in set)               '9'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+6.64 dB'
'TXXX:replaygain_track_peak'                        '0.842877'

========================== row from database ==========================
                                              'id'  1537182
                                            'path'  /data/Music/Other/F3/Biosphere/2000 - Cirque du Soleil/09-Algae & Fungi part 1.mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  343
                                           'genre'  im-calmer
                                        'filesize'  9797905
                                           'mtime'  1662800220
                                   'redo_metaread'  0
                                        'rest_str'   F3 2000 du Soleil 09 im calmer
                                      'tag_artist'  Biosphere
                                     'tag_release'  Cirque
                                       'tag_title'  Algae & Fungi part 1
                                             'bpm'  85.4
                                    'search_title'  '1':4 'algae':1 'fungi':2 'part':3
                                   'search_artist'  'biosphere':1
                                  'search_release'  'cirque':1
                                     'search_rest'  '2000':2 'calmer':6 'du':3 'f3':1 'im':5 'soleil':4
                                    'search_combo'  '1':4A '2000':8 'algae':1A 'biosphere':5B 'calmer':12 'cirque':6C 'du':9 'f3':7 'fungi':2A 'im':11 'part':3A 'soleil':10
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800220.311502  (2022-09-10 10:57:00)
                             'size'  9797905