======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '155'
                                          'artist'  'Nat "King" Cole'
                                     'text_people'  ''
                                         'release'  'Capitol 3095'
                                           'title'  'A Blossom Fell'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', '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'  "['jazz', 'swing', 'oldies', 'blues', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '021'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '139.948'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x008\x00+\x009\x006\x00+\x003\x000\x008\x00E\x00+\x005\x00F\x007\x008\x00+\x008\x00D\x000\x002\x00+\x00B\x00F\x009\x00F\x00+\x00E\x00A\x000\x006\x00+\x001\x001\x00A\x007\x009\x00+\x001\x004\x003\x009\x003\x00+\x001\x007\x009\x004\x004\x00+\x001\x00A\x009\x001\x009\x00+\x001\x00D\x00D\x002\x00B\x00+\x002\x001\x003\x000\x00E\x00+\x002\x004\x00D\x00A\x009\x00+\x002\x007\x003\x002\x001\x00+\x002\x00A\x001\x00E\x003\x00+\x002\x00C\x00C\x00E\x008\x00+\x003\x000\x000\x005\x00F\x00+\x003\x002\x00D\x00D\x009\x00+\x003\x006\x004\x007\x003\x00+\x003\x009\x003\x003\x005\x00+\x003\x00C\x00A\x001\x009\x00+\x003\x00F\x00F\x007\x003\x00+\x004\x003\x004\x008\x009\x00+\x004\x006\x00A\x004\x00B\x00+\x004\x009\x005\x000\x000\x00\x00\x00')
'PRIV:AverageLevel:\x81\x0e\x00\x00'                PRIV(owner='AverageLevel', data=b'\x81\x0e\x00\x00')
'PRIV:PeakValue:¼i\x00\x00'                         PRIV(owner='PeakValue', data=b'\xbci\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x001\x002\x003\x003\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x007\x005\x004\x008\x008\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x001\x002\x003\x003\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x007\x005\x004\x008\x008\x007\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x01\x18ÕE2ÕVN\x95\x8e[ú\x8cXÝX'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x01\x18\xd5E2\xd5VN\x95\x8e[\xfa\x8cX\xddX')
'PRIV:WM/WMCollectionID:\x01\x18ÕE2ÕVN\x95\x8e[ú\x8cXÝX'  PRIV(owner='WM/WMCollectionID', data=b'\x01\x18\xd5E2\xd5VN\x95\x8e[\xfa\x8cX\xddX')
"PRIV:WM/WMContentID:\x1c¥\x82(¥\x10ßB\x81eAÃÚ\r'\x16"  PRIV(owner='WM/WMContentID', data=b"\x1c\xa5\x82(\xa5\x10\xdfB\x81eA\xc3\xda\r'\x16")
'TALB' (Album/Movie/Show title)                     'Capitol 3095'
'TBPM' (BPM (beats per minute))                     '139.948'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'A Blossom Fell'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '155226'
'TPE1' (Lead performer(s)/Soloist(s))               'Nat "King" Cole'
'TPUB' (Publisher)                                  'Time-Life'
'TRCK' (Track number/Position in set)               '021'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'oldies', 'blues', 'christmas']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'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'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.580623'

========================== row from database ==========================
                                              'id'  1453698
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/1955-021 - Nat King Cole - A Blossom Fell.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  155
                                           'genre'  prerock-swing
                                        'filesize'  6251126
                                           'mtime'  1620562513
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 1955 021 prerock swing
                                      'tag_artist'  Nat "King" Cole
                                     'tag_release'  Capitol 3095
                                       'tag_title'  A Blossom Fell
                                             'bpm'  139.948
                                    'search_title'  'a':1 'blossom':2 'fell':3
                                   'search_artist'  'cole':3 'king':2 'nat':1
                                  'search_release'  '3095':2 'capitol':1
                                     'search_rest'  '00oldiepop':5 '1955':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':13 '1955':14 '3095':8C 'a':1A 'blossom':2A 'capitol':7C 'cole':6B 'country':12 'exotica':10 'fell':3A 'jazz':9 'king':5B 'nat':4B 'oldies':11 'prerock':15 'swing':16
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  10A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'oldies', 'blues', 'christmas']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562512.8601828  (2021-05-09 14:15:12)
                             'size'  6251126