======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '192'
                                          'artist'  'Enrico Caruso'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Vesti La Giubba (Leoncavallo - Pagliacci)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', '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'  '1907'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-italian'
                                             'bpm'  '126.5'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '126.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-italian'
'TDRC' (Recording time)                             '1907'
'TIT2' (Title/songname/content description)         'Vesti La Giubba (Leoncavallo - Pagliacci)'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '192000'
'TPE1' (Lead performer(s)/Soloist(s))               'Enrico Caruso'
'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'                                      '2'
'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'                        '+1.90 dB'
'TXXX:replaygain_track_peak'                        '0.741907'

========================== row from database ==========================
                                              'id'  1467901
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1907/Enrico Caruso - Vesti La Giubba (I Pagliacci) (orchestra version) 1907.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  192
                                           'genre'  prerock-vocal-italian
                                        'filesize'  3890494
                                           'mtime'  1621509267
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1907 (I (orchestra version) 1907 prerock vocal italian
                                      'tag_artist'  Enrico Caruso
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Vesti La Giubba (Leoncavallo - Pagliacci)
                                             'bpm'  126.5
                                    'search_title'  'giubba':3 'la':2 'leoncavallo':4,5 'pagliacci':6,7 'vesti':1
                                   'search_artist'  'caruso':2 'enrico':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1907':6 'country':4 'exotica':2 'i':7,8 'italian':15 'jazz':1 'oldies':3 'orchestra':9,10 'prerock':13 'version':11,12 'vocal':14
                                    'search_combo'  '00oldiepop':19 '1907':20 'album':11C 'caruso':9B 'country':18 'enrico':8B 'exotica':16 'giubba':3A 'i':21,22 'italian':29 'jazz':15 'la':2A 'leoncavallo':4A,5A 'non':10C 'nonalbum':12C 'oldies':17 'orchestra':23,24 'pagliacci':6A,7A 'prerock':27 'tracks':13C,14C 'version':25,26 'vesti':1A 'vocal':28
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           '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-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['q-vocals-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1907
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621509267.205152  (2021-05-20 13:14:27)
                             'size'  3890494