======================== unified (from filesystem) ========================
                                         'bitrate'  '250.955'
                                        'duration'  '350'
                                          'artist'  'Susperia'
                                     'text_people'  'Cyrus/Elvorn/Memnock/Warren Atheras'
                                         'release'  'Unlimited'
                                           'title'  'Devil May Care'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['melodic death metal', 'melodic black metal', 'black metal', 'thrash "
 "metal', 'metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '142.6'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\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 \x006\x009\x006\x000\x008\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x004\x007\x009\x005\x009\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x007\x000\x009\x005\x005\x001\x004\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x009\x006\x000\x008\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x004\x007\x009\x005\x009\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x007\x000\x009\x005\x005\x001\x004\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:Ãv±\x00\x9c\t]B¨\x02ª\x81ØVGâ'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xc3v\xb1\x00\x9c\t]B\xa8\x02\xaa\x81\xd8VG\xe2')
'PRIV:WM/WMCollectionID:Ãv±\x00\x9c\t]B¨\x02ª\x81ØVGâ'  PRIV(owner='WM/WMCollectionID', data=b'\xc3v\xb1\x00\x9c\t]B\xa8\x02\xaa\x81\xd8VG\xe2')
'PRIV:WM/WMContentID:÷ïDãæË\x9dD¯&\x15\x80\x03<\x9f\x16'  PRIV(owner='WM/WMContentID', data=b'\xf7\xefD\xe3\xe6\xcb\x9dD\xaf&\x15\x80\x03<\x9f\x16')
'TALB' (Album/Movie/Show title)                     'Unlimited'
'TBPM' (BPM (beats per minute))                     '142.6'
'TCOM' (Composer)                                   'Cyrus/Elvorn/Memnock/Warren Atheras'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Devil May Care'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Susperia'
'TPE2' (Band/orchestra/accompaniment)               'Susperia'
'TPUB' (Publisher)                                  'Candlelight'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['melodic death metal',
 'melodic black metal',
 'black metal',
 'thrash metal',
 'metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.02 dB'
'TXXX:replaygain_track_peak'                        '0.331296'

========================== row from database ==========================
                                              'id'  1391071
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Susperia/Unlimited/Susperia - Unlimited - 04 - Devil May Care.mp3
                                         'working'  None
                                         'bitrate'  251
                                    'duration_sec'  350
                                           'genre'  eid-metal-black
                                        'filesize'  11011282
                                           'mtime'  1620301802
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 04 eid metal black
                                      'tag_artist'  Susperia
                                     'tag_release'  Unlimited
                                       'tag_title'  Devil May Care
                                             'bpm'  142.6
                                    'search_title'  'care':3 'devil':1 'may':2
                                   'search_artist'  'susperia':1
                                  'search_release'  'unlimited':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'black':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':6 '00metal':7 'black':10 'care':3A 'devil':1A 'eid':8 'may':2A 'metal':9 'susperia':4B 'unlimited':5C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['melodic death metal', 'melodic black metal', 'black metal', 'thrash metal', 'metal']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301802.2896686  (2021-05-06 13:50:02)
                             'size'  11011282