======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '314'
                                          'artist'  'New Paradise'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'This World Today Is a Mess'
                                           'quals'  "['q-bass-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'pop,eighties,zomgeighties'
                                             'bpm'  '140.8'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '140.8'
'TCON' (Content type, a.k.a. Genre)                 'pop,eighties,zomgeighties'
'TIT2' (Title/songname/content description)         'This World Today Is a Mess'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'New Paradise'
'TRCK' (Track number/Position in set)               '0'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.65 dB'
'TXXX:replaygain_track_peak'                        '0.519937'

========================== row from database ==========================
                                              'id'  1538347
                                            'path'  /data/Music/Other/PrevSet/[7zomgeighties]/New Paradise - This World Today Is a Mess.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  314
                                           'genre'  pop,eighties,zomgeighties
                                        'filesize'  5038505
                                           'mtime'  1662800396
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [7zomgeighties] pop,eighties,zomgeighties
                                      'tag_artist'  New Paradise
                                     'tag_release'  None
                                       'tag_title'  This World Today Is a Mess
                                             'bpm'  140.8
                                    'search_title'  'a':5 'is':4 'mess':6 'this':1 'today':3 'world':2
                                   'search_artist'  'new':1 'paradise':2
                                  'search_release'  
                                     'search_rest'  '7zomgeighties':2,3 'eighties':5,8 'pop':4,7 'prev':10 'prevset':1 'set':11 'zomgeighties':6,9
                                    'search_combo'  '7zomgeighties':10,11 'a':5A 'eighties':13,16 'is':4A 'mess':6A 'new':7B 'paradise':8B 'pop':12,15 'prev':18 'prevset':9 'set':19 'this':1A 'today':3A 'world':2A 'zomgeighties':14,17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['q-bass-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800395.5498447  (2022-09-10 10:59:55)
                             'size'  5038505