======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '248'
                                          'artist'  'No Doubt'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Come On Eileen (Cover)'
                                           'quals'  "['q-bass-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '117.8'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TBPM' (BPM (beats per minute))                     '117.8'
'TIT2' (Title/songname/content description)         'Come On Eileen (Cover)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'No Doubt'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'

========================== row from database ==========================
                                              'id'  1538286
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Save Ferris/Come on Eileen.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  248
                                           'genre'  
                                        'filesize'  3973294
                                           'mtime'  1662800301
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] Save Ferris on
                                      'tag_artist'  No Doubt
                                     'tag_release'  None
                                       'tag_title'  Come On Eileen (Cover)
                                             'bpm'  117.8
                                    'search_title'  'come':1 'cover':4,5 'eileen':3 'on':2
                                   'search_artist'  'doubt':2 'no':1
                                  'search_release'  
                                     'search_rest'  '0yay1':2,3 'ferris':5 'on':6 'prev':7 'prevset':1 'save':4 'set':8
                                    'search_combo'  '0yay1':9,10 'come':1A 'cover':4A,5A 'doubt':7B 'eileen':3A 'ferris':12 'no':6B 'on':2A,13 'prev':14 'prevset':8 'save':11 'set':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800300.860901  (2022-09-10 10:58:20)
                             'size'  3973294