======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '197'
                                          'artist'  'Vertical Horizon'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Fast Car (live Tracy Chapman cover)'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '137.9'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'PRIV:www.mexp.dk:\x01\x0b\x00\x00\x00\x00good stuff'  PRIV(owner='www.mexp.dk', data=b'\x01\x0b\x00\x00\x00\x00good stuff')
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '137.9'
'TIT2' (Title/songname/content description)         'Fast Car (live Tracy Chapman cover)'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Vertical Horizon'
'TRCK' (Track number/Position in set)               '3'
'TXXX:MusicBrainz Album Id'                         '62cebc97-9113-4662-b5e7-fd7b3dadda30'
'TXXX:MusicBrainz Artist Id'                        'e25216bf-b0ac-4bd3-bc5a-1f82a7d0274f'
'TXXX:MusicBrainz TRM Id'                           'f17c2a2e-f9a5-49ba-ab37-e1ac1161c4af'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'cb124478-71bb-447b-addc-2d8edbf5ef4a')

========================== row from database ==========================
                                              'id'  1538755
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/zUnsorted/Vertical Horizon - Fast Car (live Tracy Chapman cover).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  197
                                           'genre'  
                                        'filesize'  3158190
                                           'mtime'  1662800269
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] zUnsorted
                                      'tag_artist'  Vertical Horizon
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Fast Car (live Tracy Chapman cover)
                                             'bpm'  137.9
                                    'search_title'  'car':2 'chapman':6 'cover':7,8 'fast':1 'live':3,4 'tracy':5
                                   'search_artist'  'horizon':2 'vertical':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0yay1':2,3 'prev':5 'prevset':1 'set':6 'unsorted':8 'z':7 'zunsorted':4
                                    'search_combo'  '0yay1':17,18 'album':12C 'car':2A 'chapman':6A 'cover':7A,8A 'fast':1A 'horizon':10B 'live':3A,4A 'non':11C 'nonalbum':13C 'prev':20 'prevset':16 'set':21 'tracks':14C,15C 'tracy':5A 'unsorted':23 'vertical':9B 'z':22 'zunsorted':19
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800269.353918  (2022-09-10 10:57:49)
                             'size'  3158190