======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '235'
                                          'artist'  'Röyksopp'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Only This Moment'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '123.0'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TBPM' (BPM (beats per minute))                     '123.0'
'TIT2' (Title/songname/content description)         'Only This Moment'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Röyksopp'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'

========================== row from database ==========================
                                              'id'  1538543
                                            'path'  /data/Music/Other/PrevSet/[2electro1-softer]/Royksopp/Only This Moment.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  235
                                           'genre'  
                                        'filesize'  5661397
                                           'mtime'  1662800430
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [2electro1 softer] Royksopp
                                      'tag_artist'  Röyksopp
                                     'tag_release'  None
                                       'tag_title'  Only This Moment
                                             'bpm'  123.0
                                    'search_title'  'moment':3 'only':1 'this':2
                                   'search_artist'  'royksopp':1,2
                                  'search_release'  
                                     'search_rest'  '2electro1':2,3 'prev':7 'prevset':1 'royksopp':6 'set':8 'softer':4,5
                                    'search_combo'  '2electro1':7,8 'moment':3A 'only':1A 'prev':12 'prevset':6 'royksopp':4B,5B,11 'set':13 'softer':9,10 'this':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800429.6127453  (2022-09-10 11:00:29)
                             'size'  5661397