======================== unified (from filesystem) ========================
                                         'bitrate'  '128.005'
                                        'duration'  '207'
                                          'artist'  'Garbage'
                                     'text_people'  ''
                                         'release'  'Beautifulgarbage'
                                           'title'  'Til The Day I Die'
                                           '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'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '118.2'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'ogg had 144 kbps 44100 Hz'
'TALB' (Album/Movie/Show title)                     'Beautifulgarbage'
'TBPM' (BPM (beats per minute))                     '118.2'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Til The Day I Die'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Garbage'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'

========================== row from database ==========================
                                              'id'  1538500
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Garbage/Til The Day I Die.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  207
                                           'genre'  
                                        'filesize'  3333279
                                           'mtime'  1662800210
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1]
                                      'tag_artist'  Garbage
                                     'tag_release'  Beautifulgarbage
                                       'tag_title'  Til The Day I Die
                                             'bpm'  118.2
                                    'search_title'  'day':3 'die':5 'i':4 'the':2 'til':1
                                   'search_artist'  'garbage':1
                                  'search_release'  'beautifulgarbage':1
                                     'search_rest'  '0yay1':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '0yay1':9,10 'beautifulgarbage':7C 'day':3A 'die':5A 'garbage':6B 'i':4A 'prev':11 'prevset':8 'set':12 'the':2A 'til':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800210.4158216  (2022-09-10 10:56:50)
                             'size'  3333279