======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '191'
                                          'artist'  'Alibert'
                                     'text_people'  ''
                                         'release'  'Pathe PA  691'
                                           'title'  'Le Plus Beau Tango Du Monde (+ Gaby Sims)'
                                           '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-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alibert', 'chanson francaise', 'chanson', 'cabaret', 'marseille']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '127.5'
                                             '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)                     'Pathe PA  691'
'TBPM' (BPM (beats per minute))                     '127.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1932'
'TIT2' (Title/songname/content description)         'Le Plus Beau Tango Du Monde (+ Gaby Sims)'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '191000'
'TPE1' (Lead performer(s)/Soloist(s))               'Alibert'
'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'                                   ['alibert', 'chanson francaise', 'chanson', 'cabaret', 'marseille']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+1.71 dB'
'TXXX:replaygain_track_peak'                        '0.752761'

========================== row from database ==========================
                                              'id'  1474121
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Alibert - Le Plus Beau Tango Du Monde (+ Gaby Sims) 1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  191
                                           'genre'  prerock-unsorted
                                        'filesize'  3865914
                                           'mtime'  1621697937
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 1932 prerock unsorted
                                      'tag_artist'  Alibert
                                     'tag_release'  Pathe PA  691
                                       'tag_title'  Le Plus Beau Tango Du Monde (+ Gaby Sims)
                                             'bpm'  127.5
                                    'search_title'  'beau':3 'du':5 'gaby':7 'le':1 'monde':6 'plus':2 'sims':8,9 'tango':4
                                   'search_artist'  'alibert':1
                                  'search_release'  '691':3 'pa':2 'pathe':1
                                     'search_rest'  '00oldiepop':5 '1932':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':18 '1932':19 '691':13C 'alibert':10B 'beau':3A 'country':17 'du':5A 'exotica':15 'gaby':7A 'jazz':14 'le':1A 'monde':6A 'oldies':16 'pa':12C 'pathe':11C 'plus':2A 'prerock':20 'sims':8A,9A 'tango':4A 'unsorted':21
                                    '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-2']
                                      'lastfmtags'  ['alibert', 'chanson francaise', 'chanson', 'cabaret', 'marseille']
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697936.9562666  (2021-05-22 17:38:56)
                             'size'  3865914