======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '136'
                                          'artist'  'Sam Cooke'
                                     'text_people'  'Sam Cooke'
                                         'release'  'Greatest Hits'
                                           'title'  'Only Sixteen'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']"
                                     'discogstags'  "['funk / soul', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-soul'
                                             'bpm'  '111.149'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-186 POS 28'
'COMM:ID3v1 Comment:XXX'                            '59-186 POS 28'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x005\x00+\x009\x006\x00+\x003\x001\x000\x001\x00+\x006\x000\x001\x00A\x00+\x009\x004\x005\x00E\x00+\x00C\x006\x00B\x008\x00+\x00E\x00F\x00A\x00D\x00+\x001\x001\x00F\x00B\x004\x00+\x001\x004\x007\x00B\x00E\x00+\x001\x006\x00D\x005\x00C\x00+\x001\x009\x00D\x002\x002\x00+\x001\x00C\x00C\x004\x00D\x00+\x001\x00F\x00B\x005\x000\x00+\x002\x002\x009\x008\x009\x00+\x002\x005\x009\x007\x004\x00+\x002\x008\x007\x00B\x009\x00+\x002\x00B\x008\x005\x004\x00+\x002\x00E\x000\x00E\x00C\x00+\x003\x000\x00F\x00B\x00D\x00+\x003\x004\x006\x005\x00C\x00+\x003\x007\x007\x00F\x005\x00+\x003\x00A\x008\x00C\x007\x00+\x003\x00D\x00A\x00D\x006\x00\x00\x00')
'PRIV:AverageLevel:è\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xe8\x0c\x00\x00')
'PRIV:PeakValue:×z\x00\x00'                         PRIV(owner='PeakValue', data=b'\xd7z\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 \x003\x004\x000\x007\x008\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x003\x009\x006\x000\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x006\x006\x003\x009\x009\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x004\x000\x007\x008\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x003\x009\x006\x000\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x006\x006\x003\x009\x009\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:qgZ4¸BLD¥\x80iY\x0f|¢\x97'  PRIV(owner='WM/WMCollectionGroupID', data=b'qgZ4\xb8BLD\xa5\x80iY\x0f|\xa2\x97')
'PRIV:WM/WMCollectionID:qgZ4¸BLD¥\x80iY\x0f|¢\x97'  PRIV(owner='WM/WMCollectionID', data=b'qgZ4\xb8BLD\xa5\x80iY\x0f|\xa2\x97')
'PRIV:WM/WMContentID:÷7ûîX\x11ÚE\xad\x1cÞ¤ñ£Ã\x1b'  PRIV(owner='WM/WMContentID', data=b'\xf77\xfb\xeeX\x11\xdaE\xad\x1c\xde\xa4\xf1\xa3\xc3\x1b')
'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '111.149'
'TCOM' (Composer)                                   'Sam Cooke'
'TCON' (Content type, a.k.a. Genre)                 'prerock-soul'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Only Sixteen'
'TKEY' (Initial key)                                '4B'
'TLEN' (Length)                                     '136666'
'TPE1' (Lead performer(s)/Soloist(s))               'Sam Cooke'
'TPE2' (Band/orchestra/accompaniment)               'Sam Cooke'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'soul']
'TXXX:lastfmtags'                                   ['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.685710'

========================== row from database ==========================
                                              'id'  1445516
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-186 - Sam Cooke - Only Sixteen.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  136
                                           'genre'  prerock-soul
                                        'filesize'  5457792
                                           'mtime'  1642095551
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 186 prerock soul
                                      'tag_artist'  Sam Cooke
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Only Sixteen
                                             'bpm'  111.149
                                    'search_title'  'only':1 'sixteen':2
                                   'search_artist'  'cooke':2 'sam':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00oldiepop':5 '186':8 '1959':6 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'soul':10
                                    'search_combo'  '00oldiepop':11 '186':14 '1959':12 '59':13 'cooke':4B 'country':10 'exotica':8 'greatest':5C 'hits':6C 'jazz':7 'oldies':9 'only':1A 'prerock':15 'sam':3B 'sixteen':2A 'soul':16
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', 'q-chart-1', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['oldies', '60s', 'rnb', 'soul', 'gospel', 'rhythm and blues']
                                        'tag_date'  1959
                                     'discogstags'  ['funk / soul', 'soul']

============================== file details ==============================
                                           'mtime'  1642095550.7663696  (2022-01-13 18:39:10)
                             'size'  5457792