======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '313'
                                          'artist'  'Tom Lehrer'
                                     'text_people'  ''
                                         'release'  'Tom Lehrer Revisited'
                                           'title'  'The Irish Ballad'
                                           'quals'  "['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-3', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'Comedy'
                                             'bpm'  '111.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TALB' (Album/Movie/Show title)                     'Tom Lehrer Revisited'
'TBPM' (BPM (beats per minute))                     '111.0'
'TCON' (Content type, a.k.a. Genre)                 'Comedy'
'TDOR' (Original release time)                      '1960'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'The Irish Ballad'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Lehrer'
'TRCK' (Track number/Position in set)               '7'
'TXXX:MusicBrainz Album Id'                         '6af24efd-09a3-4721-b067-a9b84de96461'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'live'
'TXXX:MusicBrainz Artist Id'                        '359363a8-1dc7-40c9-9337-f5aa507000b6'
'TXXX:MusicBrainz TRM Id'                           '4a95b705-b11b-4c1b-be80-456c833913ba'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '3'
'TXXX:q-vocals'                                     '4'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'bad394c0-2f5f-446d-93b8-bf1150fec75c')

========================== row from database ==========================
                                              'id'  1538378
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Tom Lehrer/The Irish Ballad.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  313
                                           'genre'  Comedy
                                        'filesize'  6280815
                                           'mtime'  1662800572
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Comedy
                                      'tag_artist'  Tom Lehrer
                                     'tag_release'  Tom Lehrer Revisited
                                       'tag_title'  The Irish Ballad
                                             'bpm'  111.0
                                    'search_title'  'ballad':3 'irish':2 'the':1
                                   'search_artist'  'lehrer':2 'tom':1
                                  'search_release'  'lehrer':2 'revisited':3 'tom':1
                                     'search_rest'  '9amusing':2,3 'comedy':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '9amusing':10,11 'ballad':3A 'comedy':12 'irish':2A 'lehrer':5B,7C 'prev':13 'prevset':9 'revisited':8C 'set':14 'the':1A 'tom':4B,6C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-3', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800571.6241612  (2022-09-10 11:02:51)
                             'size'  6280815