======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '285'
                                          'artist'  'Celtic Myst                     '
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '10 - Celtic Spirit - Celtic Spirit Medley'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '101.8'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '101.8'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         '10 - Celtic Spirit - Celtic Spirit Medley'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '285000'
'TPE1' (Lead performer(s)/Soloist(s))               'Celtic Myst                     '
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.72 dB'
'TXXX:replaygain_track_peak'                        '0.517659'

========================== row from database ==========================
                                              'id'  1251253
                                            'path'  /data/Music/Bulk/00localcharacter/Clannad - Celtic Myst/Celtic Spirit - Celtic Spirit Medley.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  285
                                           'genre'  loc-unsorted
                                        'filesize'  4564072
                                           'mtime'  1620400777
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Clannad loc unsorted
                                      'tag_artist'  Celtic Myst                     
                                     'tag_release'  None
                                       'tag_title'  10 - Celtic Spirit - Celtic Spirit Medley
                                             'bpm'  101.8
                                    'search_title'  'celtic':1 'medley':3 'spirit':2
                                   'search_artist'  'celtic':1 'myst':2
                                  'search_release'  
                                     'search_rest'  'clannad':1 'loc':2 'unsorted':3
                                    'search_combo'  'celtic':1A,4B 'clannad':6 'loc':7 'medley':3A 'myst':5B 'spirit':2A 'unsorted':8
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-piano-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620400777.2887816  (2021-05-07 17:19:37)
                             'size'  4564072