======================== unified (from filesystem) ========================
                                         'bitrate'  '112.004'
                                        'duration'  '228'
                                          'artist'  'Nada Surf'
                                     'text_people'  ''
                                         'release'  'Highlow'
                                           'title'  'Popular'
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '95.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'ogg had 112 kbps 44100 Hz'
'TALB' (Album/Movie/Show title)                     'Highlow'
'TBPM' (BPM (beats per minute))                     '95.5'
'TIT2' (Title/songname/content description)         'Popular'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nada Surf'
'TRCK' (Track number/Position in set)               '3'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'

========================== row from database ==========================
                                              'id'  1538308
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/zUnsorted/Nada Surf - Popular.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  228
                                           'genre'  
                                        'filesize'  3201415
                                           'mtime'  1662800304
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] zUnsorted
                                      'tag_artist'  Nada Surf
                                     'tag_release'  Highlow
                                       'tag_title'  Popular
                                             'bpm'  95.5
                                    'search_title'  'popular':1
                                   'search_artist'  'nada':1 'surf':2
                                  'search_release'  'highlow':1
                                     'search_rest'  '0yay1':2,3 'prev':5 'prevset':1 'set':6 'unsorted':8 'z':7 'zunsorted':4
                                    'search_combo'  '0yay1':6,7 'highlow':4C 'nada':2B 'popular':1A 'prev':9 'prevset':5 'set':10 'surf':3B 'unsorted':12 'z':11 'zunsorted':8
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800303.7888067  (2022-09-10 10:58:23)
                             'size'  3201415