======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '262'
                                          'artist'  'Benjamino Gigli & Giuseppe De Luca'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Del Tempio Al Limitar (Carmen - Pearl Fisher's Duet)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-opera'
                                             'bpm'  '139.8'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '139.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-opera'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         "Del Tempio Al Limitar (Carmen - Pearl Fisher's Duet)"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '262000'
'TPE1' (Lead performer(s)/Soloist(s))               'Benjamino Gigli & Giuseppe De Luca'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.85 dB'
'TXXX:replaygain_track_peak'                        '0.586090'

========================== row from database ==========================
                                              'id'  1511238
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Benjamino Gigli & Giuseppe De Luca - Del Tempio Al Limitar (Carmen - Pearl Fisher_s Duet) 1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  262
                                           'genre'  prerock-vocal-opera
                                        'filesize'  5313538
                                           'mtime'  1621625712
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 Fisher_s 1933 prerock vocal opera
                                      'tag_artist'  Benjamino Gigli & Giuseppe De Luca
                                     'tag_release'  None
                                       'tag_title'  Del Tempio Al Limitar (Carmen - Pearl Fisher's Duet)
                                             'bpm'  139.8
                                    'search_title'  'al':3 'carmen':5,6 'del':1 'duet':11,12 'fisher':8 'fishers':10 'limitar':4 'pearl':7 's':9 'tempio':2
                                   'search_artist'  'benjamino':1 'de':4 'gigli':2 'giuseppe':3 'luca':5
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1933':6 'country':4 'exotica':2 'fisher':7 'jazz':1 'oldies':3 'opera':11 'prerock':9 's':8 'vocal':10
                                    'search_combo'  '00oldiepop':22 '1933':23 'al':3A 'benjamino':13B 'carmen':5A,6A 'country':21 'de':16B 'del':1A 'duet':11A,12A 'exotica':19 'fisher':8A,24 'fishers':10A 'gigli':14B 'giuseppe':15B 'jazz':18 'limitar':4A 'luca':17B 'oldies':20 'opera':28 'pearl':7A 'prerock':26 's':9A,25 'tempio':2A 'vocal':27
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625712.1837258  (2021-05-21 21:35:12)
                             'size'  5313538