======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '235'
                                          'artist'  'Rick Springfield'
                                     'text_people'  'Rick Springfield'
                                         'release'  "1989-Rick Springfield's Greatest Hits"
                                           'title'  'Celebrate Youth'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'classic rock', 'pop rock', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '109.114'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'C\x00+\x009\x006\x00+\x003\x009\x00A\x00F\x00+\x006\x009\x00B\x00B\x00+\x00A\x004\x006\x007\x00+\x00D\x009\x001\x00E\x00+\x001\x001\x003\x00B\x00E\x00+\x001\x005\x003\x004\x007\x00+\x001\x009\x008\x009\x008\x00+\x001\x00D\x007\x009\x007\x00+\x002\x001\x00E\x008\x005\x00+\x002\x006\x003\x008\x003\x00+\x002\x00A\x00A\x00F\x003\x00+\x002\x00E\x008\x002\x001\x00\x00\x00')
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'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 \x001\x008\x007\x004\x003\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x005\x000\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x003\x000\x008\x007\x001\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x001\x008\x007\x004\x003\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x005\x000\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x003\x000\x008\x007\x001\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x80@\x18\x8e³ß*I¥mê\n"Æ\xad×'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x80@\x18\x8e\xb3\xdf*I\xa5m\xea\n"\xc6\xad\xd7')
'PRIV:WM/WMCollectionID:\x80@\x18\x8e³ß*I¥mê\n"Æ\xad×'  PRIV(owner='WM/WMCollectionID', data=b'\x80@\x18\x8e\xb3\xdf*I\xa5m\xea\n"\xc6\xad\xd7')
'PRIV:WM/WMContentID:k1\x82\x03 \x9aõH\x818^Ë{\xa0>V'  PRIV(owner='WM/WMContentID', data=b'k1\x82\x03 \x9a\xf5H\x818^\xcb{\xa0>V')
'TALB' (Album/Movie/Show title)                     "1989-Rick Springfield's Greatest Hits"
'TBPM' (BPM (beats per minute))                     '109.114'
'TCOM' (Composer)                                   'Rick Springfield'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Celebrate Youth'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '235493'
'TPE1' (Lead performer(s)/Soloist(s))               'Rick Springfield'
'TPE2' (Band/orchestra/accompaniment)               'Rick Springfield'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'pop rock', 'pop', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.37 dB'
'TXXX:replaygain_track_peak'                        '0.450126'

========================== row from database ==========================
                                              'id'  1309726
                                            'path'  /data/Music/Bulk/00poprockelectronic/1985 complete/099-A Rick Springfield - Celebrate Youth (single version).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  235
                                           'genre'  rock-cppex
                                        'filesize'  9524888
                                           'mtime'  1620736987
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1985 complete 099 A (single version) rock cppex
                                      'tag_artist'  Rick Springfield
                                     'tag_release'  1989-Rick Springfield's Greatest Hits
                                       'tag_title'  Celebrate Youth
                                             'bpm'  109.114
                                    'search_title'  'celebrate':1 'youth':2
                                   'search_artist'  'rick':1 'springfield':2
                                  'search_release'  '1989':1 '1989rick':3 'greatest':7 'hits':8 'rick':2 's':5 'springfield':4 'springfields':6
                                     'search_rest'  '00poprockelectronic':1 '1985':2 'a':4 'complete':3 'cppex':10 'rock':9 'single':5,6 'version':7,8
                                    'search_combo'  '00poprockelectronic':13 '1985':14 '1989':5C '1989rick':7C 'a':16 'celebrate':1A 'complete':15 'cppex':22 'greatest':11C 'hits':12C 'rick':3B,6C 'rock':21 's':9C 'single':17,18 'springfield':4B,8C 'springfields':10C 'version':19,20 'youth':2A
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'pop rock', 'pop', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736986.782605  (2021-05-11 14:43:06)
                             'size'  9524888