======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '309'
                                          'artist'  'Alma Gluck'
                                     'text_people'  ''
                                         'release'  'Victor 88433'
                                           'title'  'Ave Maria (+ 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-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1913'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '141.6'
                                             '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'
'TALB' (Album/Movie/Show title)                     'Victor 88433'
'TBPM' (BPM (beats per minute))                     '141.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1913'
'TIT2' (Title/songname/content description)         'Ave Maria (+ Ephrem Zimbalist-vn)'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '309000'
'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: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'                        '+1.80 dB'
'TXXX:replaygain_track_peak'                        '0.527345'

========================== row from database ==========================
                                              'id'  1459342
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1913/Alma Gluck - Ave Maria (+ Ephrem Zimbalist) 1913.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  309
                                           'genre'  prerock-vocal
                                        'filesize'  6261259
                                           'mtime'  1620666145
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1913 Zimbalist) 1913 prerock vocal
                                      'tag_artist'  Alma Gluck
                                     'tag_release'  Victor 88433
                                       'tag_title'  Ave Maria (+ Ephrem Zimbalist-vn)
                                             'bpm'  141.6
                                    'search_title'  'ave':1 'ephrem':3 'maria':2 'vn':5 'zimbalist':4 'zimbalistvn':6
                                   'search_artist'  'alma':1 'gluck':2
                                  'search_release'  '88433':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1913':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vocal':10 'zimbalist':7,8
                                    'search_combo'  '00oldiepop':15 '1913':16 '88433':10C 'alma':7B 'ave':1A 'country':14 'ephrem':3A 'exotica':12 'gluck':8B 'jazz':11 'maria':2A 'oldies':13 'prerock':19 'victor':9C 'vn':5A 'vocal':20 'zimbalist':4A,17,18 'zimbalistvn':6A
                                    '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'  ['q-vocals-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1913
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666144.8515756  (2021-05-10 19:02:24)
                             'size'  6261259