======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '166'
                                          'artist'  'Lil Armstrong '
                                     'text_people'  'Avon/Lil Armstrong'
                                         'release'  '1936-1940'
                                           'title'  'Brown Gal'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'oldies', 'vocal jazz', 'acoustic', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '86.180'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:WM/WMCollectionID:\x8df\x01d\x013&I\x8bÕ\x0cÝ\x88s -'  PRIV(owner='WM/WMCollectionID', data=b'\x8df\x01d\x013&I\x8b\xd5\x0c\xdd\x88s -')
'PRIV:WM/WMContentID:\x9dÃNö¸\x19ìO\x84½fÛ\x10ï\x88D'  PRIV(owner='WM/WMContentID', data=b'\x9d\xc3N\xf6\xb8\x19\xecO\x84\xbdf\xdb\x10\xef\x88D')
'TALB' (Album/Movie/Show title)                     '1936-1940'
'TBPM' (BPM (beats per minute))                     '86.180'
'TCOM' (Composer)                                   'Avon/Lil Armstrong'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Brown Gal'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '166034'
'TPE1' (Lead performer(s)/Soloist(s))               'Lil Armstrong'
'TPE2' (Band/orchestra/accompaniment)               'Lil Armstrong '
'TPUB' (Publisher)                                  'Classics'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'oldies', 'vocal jazz', 'acoustic', 'swing']
'TXXX:q-bass'                                       '2'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.53 dB'
'TXXX:replaygain_track_peak'                        '0.479792'

========================== row from database ==========================
                                              'id'  1532027
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/lil armstrong - brown gal 1936-1940.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  166
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  2667033
                                           'mtime'  1620527902
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection lil armstrong brown gal prerock jb jazz vocal
                                      'tag_artist'  Lil Armstrong 
                                     'tag_release'  1936-1940
                                       'tag_title'  Brown Gal
                                             'bpm'  86.18
                                    'search_title'  'brown':1 'gal':2
                                   'search_artist'  'armstrong':2 'lil':1
                                  'search_release'  '1936':1 '19361940':3 '1940':2
                                     'search_rest'  '30':5 'armstrong':9 'brown':10 'collection':7 'country':4 'exotica':2 'gal':11 'jazz':1 'jb':13 'lil':8 'oldies':3 'prerock':12 's':6 'vocal':14
                                    'search_combo'  '1936':5C '19361940':7C '1940':6C '30':12 'armstrong':4B,16 'brown':1A,17 'collection':14 'country':11 'exotica':9 'gal':2A,18 'jazz':8 'jb':20 'lil':3B,15 'oldies':10 'prerock':19 's':13 'vocal':21
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'oldies', 'vocal jazz', 'acoustic', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527902.413542  (2021-05-09 04:38:22)
                             'size'  2667033