======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '178'
                                          'artist'  'Georgia White'
                                     'text_people'  ''
                                         'release'  'DOCD 5302'
                                           'title'  "I'll Keep Sittin' On It (If You Can't Sell It)"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'boogie', 'female vocalists', 'delta blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '116.722'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'DOCD 5302'
'TBPM' (BPM (beats per minute))                     '116.722'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         "I'll Keep Sittin' On It (If You Can't Sell It)"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Georgia White'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['blues', 'boogie', 'female vocalists', 'delta blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.52 dB'
'TXXX:replaygain_track_peak'                        '0.340332'

========================== row from database ==========================
                                              'id'  1505494
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/DOCD 5302 - Georgia White 02 (1936-1937) 128/Georgia White - 02-03 - I_ll Keep Sittin_ On It (If You Can_t Sell It) (19360512).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  178
                                           'genre'  prerock-jb-blues
                                        'filesize'  2852736
                                           'mtime'  1620402269
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country (1936 1937) 128 03 I_ll Sittin_ Can_t (19360512) prerock jb blues
                                      'tag_artist'  Georgia White
                                     'tag_release'  DOCD 5302
                                       'tag_title'  I'll Keep Sittin' On It (If You Can't Sell It)
                                             'bpm'  116.722
                                    'search_title'  'can':12 'cant':14 'i':1 'if':9,10 'ill':3 'it':8,16 'keep':4 'll':2 'on':7 'sell':15 'sittin':5,6 't':13 'you':11
                                   'search_artist'  'georgia':1 'white':2
                                  'search_release'  '5302':2 'docd':1
                                     'search_rest'  '128':9 '1936':5,6 '19360512':15,16 '1937':7,8 'blues':19 'can':13 'country':4 'exotica':2 'i':10 'jazz':1 'jb':18 'll':11 'oldies':3 'prerock':17 'sittin':12 't':14
                                    'search_combo'  '128':29 '1936':25,26 '19360512':35,36 '1937':27,28 '5302':20C 'blues':39 'can':12A,33 'cant':14A 'country':24 'docd':19C 'exotica':22 'georgia':17B 'i':1A,30 'if':9A,10A 'ill':3A 'it':8A,16A 'jazz':21 'jb':38 'keep':4A 'll':2A,31 'oldies':23 'on':7A 'prerock':37 'sell':15A 'sittin':5A,6A,32 't':13A,34 'white':18B 'you':11A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'boogie', 'female vocalists', 'delta blues']
                                        'tag_date'  1936
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402269.2231855  (2021-05-07 17:44:29)
                             'size'  2852736