======================== unified (from filesystem) ========================
                                         'bitrate'  '160.008'
                                        'duration'  '313'
                                          'artist'  'Suzanne Vega'
                                     'text_people'  ''
                                         'release'  'Solitude Standing'
                                           'title'  "Wooden Horse (Caspar Hauser's Song)"
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '90.3'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         'ogg had 160 kbps 44100 Hz'
'TALB' (Album/Movie/Show title)                     'Solitude Standing'
'TBPM' (BPM (beats per minute))                     '90.3'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         "Wooden Horse (Caspar Hauser's Song)"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Suzanne Vega'
'TRCK' (Track number/Position in set)               '10'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'

========================== row from database ==========================
                                              'id'  1538844
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Suzanne Vega/Wooden Horse (Caspar Hauser's Song).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  313
                                           'genre'  
                                        'filesize'  6279119
                                           'mtime'  1662800272
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1]
                                      'tag_artist'  Suzanne Vega
                                     'tag_release'  Solitude Standing
                                       'tag_title'  Wooden Horse (Caspar Hauser's Song)
                                             'bpm'  90.3
                                    'search_title'  'caspar':3,4 'hauser':5 'hausers':7 'horse':2 's':6 'song':8,9 'wooden':1
                                   'search_artist'  'suzanne':1 'vega':2
                                  'search_release'  'solitude':1 'standing':2
                                     'search_rest'  '0yay1':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '0yay1':15,16 'caspar':3A,4A 'hauser':5A 'hausers':7A 'horse':2A 'prev':17 'prevset':14 's':6A 'set':18 'solitude':12C 'song':8A,9A 'standing':13C 'suzanne':10B 'vega':11B 'wooden':1A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800271.961834  (2022-09-10 10:57:51)
                             'size'  6279119