======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '266'
                                          'artist'  'Single Gun Theory'
                                     'text_people'  ''
                                         'release'  'Flow, River of My Soul'
                                           'title'  'Fall'
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Sound Clip'
                                             'bpm'  '111.0'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TALB' (Album/Movie/Show title)                     'Flow, River of My Soul'
'TBPM' (BPM (beats per minute))                     '111.0'
'TCON' (Content type, a.k.a. Genre)                 'Sound Clip'
'TIT2' (Title/songname/content description)         'Fall'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Single Gun Theory'
'TRCK' (Track number/Position in set)               '2'
'TXXX:MusicBrainz Album Id'                         '1c0887ba-67c0-4346-b109-9a68739ac447'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '0ccfd53e-a905-4cae-97c5-29e9f805744d'
'TXXX:MusicBrainz TRM Id'                           'e65e594a-02a4-4089-b44f-bb31f3a9be93'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'edcc73fc-3aa2-4912-9a2f-59b390e3bc6a')

========================== row from database ==========================
                                              'id'  1538116
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Single Gun Theory/Fall.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  266
                                           'genre'  Sound Clip
                                        'filesize'  4272334
                                           'mtime'  1662800306
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] Sound Clip
                                      'tag_artist'  Single Gun Theory
                                     'tag_release'  Flow, River of My Soul
                                       'tag_title'  Fall
                                             'bpm'  111.0
                                    'search_title'  'fall':1
                                   'search_artist'  'gun':2 'single':1 'theory':3
                                  'search_release'  'flow':1,2 'my':5 'of':4 'river':3 'soul':6
                                     'search_rest'  '0yay1':2,3 'clip':5 'prev':6 'prevset':1 'set':7 'sound':4
                                    'search_combo'  '0yay1':12,13 'clip':15 'fall':1A 'flow':5C,6C 'gun':3B 'my':9C 'of':8C 'prev':16 'prevset':11 'river':7C 'set':17 'single':2B 'soul':10C 'sound':14 'theory':4B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800306.072733  (2022-09-10 10:58:26)
                             'size'  4272334