======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '78'
                                          'artist'  'Robert Lopez and Jeff Marx'
                                     'text_people'  ''
                                         'release'  'Avenue Q (Original Broadway Cast Recording)'
                                           'title'  'My Girlfriend, Who Lives in Canada'
                                           'quals'  "['q-bass-2', 'q-drums-1', 'q-other-2', 'q-piano-2', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Blues'
                                             'bpm'  '113.5'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'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)                     'Avenue Q (Original Broadway Cast Recording)'
'TBPM' (BPM (beats per minute))                     '113.5'
'TCON' (Content type, a.k.a. Genre)                 'Blues'
'TIT2' (Title/songname/content description)         'My Girlfriend, Who Lives in Canada'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Lopez and Jeff Marx'
'TRCK' (Track number/Position in set)               '12'
'TXXX:MusicBrainz Album Id'                         '29aed286-78f4-4b96-b689-765f46d02e8a'
'TXXX:MusicBrainz Artist Id'                        'fe13305a-cc59-4d0f-b9b9-6f3a51ed92fb'
'TXXX:MusicBrainz TRM Id'                           '04727152-5266-4110-b4e0-21ec517fdad9'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '2'
'TXXX:q-vocals'                                     '4'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a69f7783-48b1-44bc-b2ed-c13397743d11')

========================== row from database ==========================
                                              'id'  1538332
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Avenue Q/My Girlfriend, Who Lives in Canada.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  78
                                           'genre'  Blues
                                        'filesize'  1257646
                                           'mtime'  1662800498
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Blues
                                      'tag_artist'  Robert Lopez and Jeff Marx
                                     'tag_release'  Avenue Q (Original Broadway Cast Recording)
                                       'tag_title'  My Girlfriend, Who Lives in Canada
                                             'bpm'  113.5
                                    'search_title'  'canada':7 'girlfriend':2,3 'in':6 'lives':5 'my':1 'who':4
                                   'search_artist'  'and':3 'jeff':4 'lopez':2 'marx':5 'robert':1
                                  'search_release'  'avenue':1 'broadway':5 'cast':6 'original':3,4 'q':2 'recording':7,8
                                     'search_rest'  '9amusing':2,3 'blues':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '9amusing':22,23 'and':10B 'avenue':13C 'blues':24 'broadway':17C 'canada':7A 'cast':18C 'girlfriend':2A,3A 'in':6A 'jeff':11B 'lives':5A 'lopez':9B 'marx':12B 'my':1A 'original':15C,16C 'prev':25 'prevset':21 'q':14C 'recording':19C,20C 'robert':8B 'set':26 'who':4A
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['q-bass-2', 'q-drums-1', 'q-other-2', 'q-piano-2', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800497.9505394  (2022-09-10 11:01:37)
                             'size'  1257646