======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '221'
                                          'artist'  'Queensrÿche'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Chasing Blue Sky (bonus track)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['metal', 'hard rock', 'progressive rock', 'progressive metal', 'heavy metal']"
                                     'discogstags'  "['rock', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '106.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '106.3'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Chasing Blue Sky (bonus track)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Queensrÿche'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'heavy metal']
'TXXX:lastfmtags'                                   ['metal', 'hard rock', 'progressive rock', 'progressive metal', 'heavy metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.48 dB'
'TXXX:replaygain_track_peak'                        '0.436930'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='www.grupoemusica.com')

========================== row from database ==========================
                                              'id'  1401476
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Queensrÿche.-.Greatest Hits.(2000).mp3.320k.euskalmetal.[www.grupoemusica.com]/15. Chasing Blue Sky (bonus track).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  221
                                           'genre'  eid-metal
                                        'filesize'  8844970
                                           'mtime'  1636301013
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Queensrÿche. .Greatest Hits.(2000).mp3.320k.euskalmetal.[www.grupoemusica.com] 15. eid metal
                                      'tag_artist'  Queensrÿche
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Chasing Blue Sky (bonus track)
                                             'bpm'  106.3
                                    'search_title'  'blue':2 'bonus':4,5 'chasing':1 'sky':3 'track':6,7
                                   'search_artist'  'queensryche':1,2
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '15':18,19 '2000':10 '320k':12 'com':16 'eid':20 'euskalmetal':13 'greatest':7,8 'grupoemusica':15 'hits':9 'hits2000mp3320keuskalmetalwwwgrupoemusicacom':17 'metal':21 'mp3':11 'queensryche':3,4,5,6 'www':14
                                    'search_combo'  '00dwimp':12 '00metal':13 '15':29,30 '2000':21 '320k':23 'blue':2A 'bonus':4A,5A 'chasing':1A 'com':27 'eid':31 'euskalmetal':24 'greatest':10C,18,19 'grupoemusica':26 'hits':11C,20 'hits2000mp3320keuskalmetalwwwgrupoemusicacom':28 'metal':32 'mp3':22 'queensryche':8B,9B,14,15,16,17 'sky':3A 'track':6A,7A 'www':25
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'hard rock', 'progressive rock', 'progressive metal', 'heavy metal']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'heavy metal']

============================== file details ==============================
                                           'mtime'  1636301012.7968507  (2021-11-07 17:03:32)
                             'size'  8844970