======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '387'
                                          'artist'  'Roberto de Simone'
                                     'text_people'  ''
                                         'release'  'La Gatta Cenerentola'
                                           'title'  'Secondo Coro Delle Lavandaie'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['folk', 'world music', 'musicologist', 'nccp']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '127.0'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/WMCollectionID:Àý»\x17Åó·I\xad\x92.\x91æ\x04~\x01'  PRIV(owner='WM/WMCollectionID', data=b'\xc0\xfd\xbb\x17\xc5\xf3\xb7I\xad\x92.\x91\xe6\x04~\x01')
'PRIV:WM/WMContentID:]Æèbàx\xadA\x94)\xa0üãq]E'     PRIV(owner='WM/WMContentID', data=b']\xc6\xe8b\xe0x\xadA\x94)\xa0\xfc\xe3q]E')
'TALB' (Album/Movie/Show title)                     'La Gatta Cenerentola'
'TBPM' (BPM (beats per minute))                     '127.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Secondo Coro Delle Lavandaie'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Roberto de Simone'
'TPE2' (Band/orchestra/accompaniment)               'Roberto de Simone'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'EMI Music Distribution'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['folk', 'world music', 'musicologist', 'nccp']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.06 dB'
'TXXX:replaygain_track_peak'                        '0.812738'

========================== row from database ==========================
                                              'id'  650364
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/music for maniacs/Roberto_de_Simone_-_Secondo_Coro_Delle_Lavandaie.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  387
                                           'genre'  electronic-unsorted
                                        'filesize'  9295872
                                           'mtime'  1620544569
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm music for maniacs Roberto_de_Simone_ _Secondo_Coro_Delle_Lavandaie electronic unsorted
                                      'tag_artist'  Roberto de Simone
                                     'tag_release'  La Gatta Cenerentola
                                       'tag_title'  Secondo Coro Delle Lavandaie
                                             'bpm'  127.0
                                    'search_title'  'coro':2 'delle':3 'lavandaie':4 'secondo':1
                                   'search_artist'  'de':2 'roberto':1 'simone':3
                                  'search_release'  'cenerentola':3 'gatta':2 'la':1
                                     'search_rest'  'coro':8 'de':5 'delle':9 'electronic':11 'for':2 'lavandaie':10 'maniacs':3 'music':1 'roberto':4 'secondo':7 'simone':6 'unsorted':12
                                    'search_combo'  'cenerentola':10C 'coro':2A,18 'de':6B,15 'delle':3A,19 'electronic':21 'for':12 'gatta':9C 'la':8C 'lavandaie':4A,20 'maniacs':13 'music':11 'roberto':5B,14 'secondo':1A,17 'simone':7B,16 'unsorted':22
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk', 'world music', 'musicologist', 'nccp']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620544569.4427266  (2021-05-09 09:16:09)
                             'size'  9295872