======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '254'
                                          'artist'  'Alma Gluck'
                                     'text_people'  ''
                                         'release'  'Victor 89093'
                                           'title'  'Fiddle And I (+ Ephrem Zimbalist-vn)'
                                           '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'soprano', 'gramophone', 'classical', 'amazing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1915'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '132.9'
                                             'key'  '6B'
                                        '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)                     'Victor 89093'
'TBPM' (BPM (beats per minute))                     '132.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1915'
'TIT2' (Title/songname/content description)         'Fiddle And I (+ Ephrem Zimbalist-vn)'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '254000'
'TPE1' (Lead performer(s)/Soloist(s))               'Alma Gluck'
'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:lastfmtags'                                   ['all', 'soprano', 'gramophone', 'classical', 'amazing']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.47 dB'
'TXXX:replaygain_track_peak'                        '0.689732'

========================== row from database ==========================
                                              'id'  1474847
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1915/Alma Gluck - Fiddle and I (+ Ephrem Zimbalist) 1915.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  254
                                           'genre'  prerock-vocal
                                        'filesize'  5150534
                                           'mtime'  1620666214
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1915 and Zimbalist) 1915 prerock vocal
                                      'tag_artist'  Alma Gluck
                                     'tag_release'  Victor 89093
                                       'tag_title'  Fiddle And I (+ Ephrem Zimbalist-vn)
                                             'bpm'  132.9
                                    'search_title'  'and':2 'ephrem':4 'fiddle':1 'i':3 'vn':6 'zimbalist':5 'zimbalistvn':7
                                   'search_artist'  'alma':1 'gluck':2
                                  'search_release'  '89093':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1915':6 'and':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'vocal':11 'zimbalist':8,9
                                    'search_combo'  '00oldiepop':16 '1915':17 '89093':11C 'alma':8B 'and':2A,18 'country':15 'ephrem':4A 'exotica':13 'fiddle':1A 'gluck':9B 'i':3A 'jazz':12 'oldies':14 'prerock':21 'victor':10C 'vn':6A 'vocal':22 'zimbalist':5A,19,20 'zimbalistvn':7A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', 'soprano', 'gramophone', 'classical', 'amazing']
                                        'tag_date'  1915
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666213.7981465  (2021-05-10 19:03:33)
                             'size'  5150534