======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '112'
                                          'artist'  'Elvis Presley'
                                     'text_people'  'Claude Demetrius'
                                         'release'  'The Top Ten Hits Disc 1'
                                           'title'  'Hard Headed Woman'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '98.072'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-016 POS 1'
'COMM:ID3v1 Comment:XXX'                            '58-016 POS 1'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x003\x00+\x009\x006\x00+\x002\x005\x00B\x00A\x00+\x005\x003\x00B\x00E\x00+\x007\x00B\x005\x00A\x00+\x009\x00F\x002\x00C\x00+\x00C\x00F\x00A\x00D\x00+\x00F\x00F\x007\x00D\x00+\x001\x002\x00B\x00F\x001\x00+\x001\x004\x00E\x006\x000\x00+\x001\x006\x00E\x001\x00D\x00+\x001\x009\x009\x00B\x00A\x00+\x001\x00C\x00B\x006\x005\x00+\x001\x00E\x00C\x008\x008\x00+\x002\x001\x003\x00A\x00E\x00+\x002\x003\x004\x00A\x006\x00+\x002\x006\x000\x00F\x007\x00+\x002\x008\x000\x00B\x00E\x00+\x002\x00A\x00C\x007\x00C\x00+\x002\x00D\x000\x007\x001\x00+\x002\x00F\x007\x00B\x003\x00\x00\x00')
'PRIV:AverageLevel:-\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'-\x0c\x00\x00')
'PRIV:PeakValue:0K\x00\x00'                         PRIV(owner='PeakValue', data=b'0K\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 \x00 \x007\x008\x000\x001\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x001\x007\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x001\x004\x008\x001\x002\x005\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x007\x008\x000\x001\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x001\x007\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x001\x004\x008\x001\x002\x005\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x1fu\x0e{hgeH\x92öGü§DÄ:'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x1fu\x0e{hgeH\x92\xf6G\xfc\xa7D\xc4:')
'PRIV:WM/WMCollectionID:\x1fu\x0e{hgeH\x92öGü§DÄ:'  PRIV(owner='WM/WMCollectionID', data=b'\x1fu\x0e{hgeH\x92\xf6G\xfc\xa7D\xc4:')
'PRIV:WM/WMContentID:0FÇ\x83\xa0G»O\x8fg\x94\x04Èéƶ'  PRIV(owner='WM/WMContentID', data=b'0F\xc7\x83\xa0G\xbbO\x8fg\x94\x04\xc8\xe9\xc6\xb6')
'TALB' (Album/Movie/Show title)                     'The Top Ten Hits Disc 1'
'TBPM' (BPM (beats per minute))                     '98.072'
'TCOM' (Composer)                                   'Claude Demetrius'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Hard Headed Woman'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '112533'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TPE2' (Band/orchestra/accompaniment)               'Elvis Presley'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '14'
'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'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.99 dB'
'TXXX:replaygain_track_peak'                        '0.587565'

========================== row from database ==========================
                                              'id'  1449871
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-016 - Elvis Presley - Hard Headed Woman.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  112
                                           'genre'  rock-pop-early
                                        'filesize'  4501376
                                           'mtime'  1620736346
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 016 rock pop early
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  The Top Ten Hits Disc 1
                                       'tag_title'  Hard Headed Woman
                                             'bpm'  98.072
                                    'search_title'  'hard':1 'headed':2 'woman':3
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  '1':6 'disc':5 'hits':4 'ten':3 'the':1 'top':2
                                     'search_rest'  '00oldiepop':5 '1958':6 '58':7 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8
                                    'search_combo'  '00oldiepop':16 '1':11C '1958':17 '58':18 'country':15 'disc':10C 'early':21 'elvis':4B 'exotica':13 'hard':1A 'headed':2A 'hits':9C 'jazz':12 'oldies':14 'pop':20 'presley':5B 'rock':19 'ten':8C 'the':6C 'top':7C 'woman':3A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736346.2564962  (2021-05-11 14:32:26)
                             'size'  4501376