======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '280'
                                          'artist'  'Flogging Molly'
                                     'text_people'  'Flogging Molly'
                                         'release'  'Alive Behind the Green Door'
                                           'title'  'Laura'
                                           'quals'  "['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '10'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '135.1'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Alive Behind the Green Door'
'TBPM' (BPM (beats per minute))                     '135.1'
'TCOM' (Composer)                                   'Flogging Molly'
'TDRC' (Recording time)                             '1997'
'TENC' (Encoded by)                                 'Lame v3.91'
'TIT2' (Title/songname/content description)         'Laura'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Flogging Molly'
'TPE2' (Band/orchestra/accompaniment)               'Flogging Molly'
'TRCK' (Track number/Position in set)               '5/10'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.68 dB'
'TXXX:replaygain_track_peak'                        '0.392204'

========================== row from database ==========================
                                              'id'  1538466
                                            'path'  /data/Music/Other/PrevSet/[9zdesorted]/Flogging Molly/Laura.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  280
                                           'genre'  
                                        'filesize'  4499770
                                           'mtime'  1662800542
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9zdesorted]
                                      'tag_artist'  Flogging Molly
                                     'tag_release'  Alive Behind the Green Door
                                       'tag_title'  Laura
                                             'bpm'  135.1
                                    'search_title'  'laura':1
                                   'search_artist'  'flogging':1 'molly':2
                                  'search_release'  'alive':1 'behind':2 'door':5 'green':4 'the':3
                                     'search_rest'  '9zdesorted':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9zdesorted':10,11 'alive':4C 'behind':5C 'door':8C 'flogging':2B 'green':7C 'laura':1A 'molly':3B 'prev':12 'prevset':9 'set':13 'the':6C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800542.1771119  (2022-09-10 11:02:22)
                             'size'  4499770