======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '254'
                                          'artist'  'The Aquabats'
                                     'text_people'  ''
                                         'release'  'The Aquabats! vs. The Floating Eye of Death!'
                                           'title'  'The Thing on the Bass Amp!'
                                           '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'  '12'
                                      'tracktotal'  '14'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Ska'
                                             'bpm'  '141.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Aquabats! vs. The Floating Eye of Death!'
'TBPM' (BPM (beats per minute))                     '141.3'
'TCON' (Content type, a.k.a. Genre)                 'Ska'
'TIT2' (Title/songname/content description)         'The Thing on the Bass Amp!'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Aquabats!'
'TPE2' (Band/orchestra/accompaniment)               'The Aquabats'
'TPUB' (Publisher)                                  'Time Bomb'
'TRCK' (Track number/Position in set)               '12/14'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.411431'

========================== row from database ==========================
                                              'id'  1538133
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Aquabats/The Thing on the Bass Amp!.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  254
                                           'genre'  Ska
                                        'filesize'  4079332
                                           'mtime'  1662800454
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Ska
                                      'tag_artist'  The Aquabats
                                     'tag_release'  The Aquabats! vs. The Floating Eye of Death!
                                       'tag_title'  The Thing on the Bass Amp!
                                             'bpm'  141.3
                                    'search_title'  'amp':5 'bass':4 'on':3 'the':1 'thing':2
                                   'search_artist'  'aquabats':2 'the':1
                                  'search_release'  'aquabats':2 'death':8 'eye':6 'floating':5 'of':7 'the':1 'vs':3,4
                                     'search_rest'  '9amusing':2,3 'prev':5 'prevset':1 'set':6 'ska':4
                                    'search_combo'  '9amusing':17,18 'amp':5A 'aquabats':7B,9C 'bass':4A 'death':15C 'eye':13C 'floating':12C 'of':14C 'on':3A 'prev':20 'prevset':16 'set':21 'ska':19 'the':1A,6B,8C 'thing':2A 'vs':10C,11C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800454.3239477  (2022-09-10 11:00:54)
                             'size'  4079332