======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'Jonathan Coulton'
                                     'text_people'  'Jonathan Coulton'
                                         'release'  'Thing a Week III'
                                           'title'  'Code Monkey'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '10'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '106.6'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Thing a Week III'
'TBPM' (BPM (beats per minute))                     '106.6'
'TCOM' (Composer)                                   'Jonathan Coulton'
'TIT2' (Title/songname/content description)         'Code Monkey'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jonathan Coulton'
'TPE2' (Band/orchestra/accompaniment)               'Jonathan Coulton'
'TRCK' (Track number/Position in set)               '9/10'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.536283'

========================== row from database ==========================
                                              'id'  1538667
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Monkey/Jonathan Coulton - Code Monkey.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  
                                        'filesize'  3744654
                                           'mtime'  1662800576
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing]
                                      'tag_artist'  Jonathan Coulton
                                     'tag_release'  Thing a Week III
                                       'tag_title'  Code Monkey
                                             'bpm'  106.6
                                    'search_title'  'code':1 'monkey':2
                                   'search_artist'  'coulton':2 'jonathan':1
                                  'search_release'  'a':2 'iii':4 'thing':1 'week':3
                                     'search_rest'  '9amusing':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9amusing':10,11 'a':6C 'code':1A 'coulton':4B 'iii':8C 'jonathan':3B 'monkey':2A 'prev':12 'prevset':9 'set':13 'thing':5C 'week':7C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800576.1680145  (2022-09-10 11:02:56)
                             'size'  3744654