======================== unified (from filesystem) ========================
                                         'bitrate'  '197.699'
                                        'duration'  '191'
                                          'artist'  'The Decemberists'
                                     'text_people'  ''
                                         'release'  'Picaresque'
                                           'title'  'Eli, the Barrow Boy'
                                           'quals'  "['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '137.4'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TALB' (Album/Movie/Show title)                     'Picaresque'
'TBPM' (BPM (beats per minute))                     '137.4'
'TIT2' (Title/songname/content description)         'Eli, the Barrow Boy'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Decemberists'
'TRCK' (Track number/Position in set)               '3'
'TXXX:MusicBrainz Album Id'                         '42ef4aa7-a493-4ba8-be55-b66e73cc4c3d'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '97b1142f-c71e-4971-8736-4a8ceaf6b4c3'
'TXXX:MusicBrainz TRM Id'                           '6d67d415-c1ed-4453-9079-4340b4f52554'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'eea17bdf-c5c4-45b3-abf5-4b7e368609cd')

========================== row from database ==========================
                                              'id'  1538768
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Decemberists/Eli, The Barrowboy.mp3
                                         'working'  None
                                         'bitrate'  198
                                    'duration_sec'  191
                                           'genre'  
                                        'filesize'  4739278
                                           'mtime'  1662800090
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] Barrowboy
                                      'tag_artist'  The Decemberists
                                     'tag_release'  Picaresque
                                       'tag_title'  Eli, the Barrow Boy
                                             'bpm'  137.4
                                    'search_title'  'barrow':4 'boy':5 'eli':1,2 'the':3
                                   'search_artist'  'decemberists':2 'the':1
                                  'search_release'  'picaresque':1
                                     'search_rest'  '0yay1':2,3 'barrowboy':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '0yay1':10,11 'barrow':4A 'barrowboy':12 'boy':5A 'decemberists':7B 'eli':1A,2A 'picaresque':8C 'prev':13 'prevset':9 'set':14 'the':3A,6B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800089.8357158  (2022-09-10 10:54:49)
                             'size'  4739278