======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '138'
                                          'artist'  "Charles d'Almaine"
                                     'text_people'  ''
                                         'release'  'Edison Concert Cylinder'
                                           'title'  'Polish National Dance'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-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-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1899'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-strings-violin'
                                             'bpm'  '139.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Edison Concert Cylinder'
'TBPM' (BPM (beats per minute))                     '139.6'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-strings-violin']
'TDRC' (Recording time)                             '1899'
'TIT2' (Title/songname/content description)         'Polish National Dance'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '138000'
'TPE1' (Lead performer(s)/Soloist(s))               "Charles d'Almaine"
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.20 dB'
'TXXX:replaygain_track_peak'                        '0.690637'

========================== row from database ==========================
                                              'id'  1506736
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/Charles D_ Almaine violin - Polish National Dance 1899.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  138
                                           'genre'  prerock-instrumental;mi-strings-violin
                                        'filesize'  2883398
                                           'mtime'  1620527993
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 D_ violin 1899 prerock instrumental;mi strings violin
                                      'tag_artist'  Charles d'Almaine
                                     'tag_release'  Edison Concert Cylinder
                                       'tag_title'  Polish National Dance
                                             'bpm'  139.6
                                    'search_title'  'dance':3 'national':2 'polish':1
                                   'search_artist'  'almaine':3 'charles':1 'd':2 'dalmaine':4
                                  'search_release'  'concert':2 'cylinder':3 'edison':1
                                     'search_rest'  '00oldiepop':5 '1800':6 '1899':9 'country':4 'd':7 'exotica':2 'instrumental':11,13 'jazz':1 'mi':12,14 'oldies':3 'prerock':10 'strings':15 'violin':8
                                    'search_combo'  '00oldiepop':15 '1800':16 '1899':19 'almaine':6B 'charles':4B 'concert':9C 'country':14 'cylinder':10C 'd':5B,17 'dalmaine':7B 'dance':3A 'edison':8C 'exotica':12 'instrumental':21,23 'jazz':11 'mi':22,24 'national':2A 'oldies':13 'polish':1A 'prerock':20 'strings':25 'violin':18
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1899
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527992.625149  (2021-05-09 04:39:52)
                             'size'  2883398