======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '169'
                                          'artist'  'Curtis Mayfield and The Impressions'
                                     'text_people'  'Curtis Mayfield'
                                         'release'  'The Anthology 1961-1977 [Disc 1]'
                                           'title'  "I'm So Proud"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['soul', 'chicago soul', 'funk', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '26'
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '138.229'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 000001D7 0000014D 00001AE8 000011F1 00027392 0000A886 00004FCC 000057FA '
 '00025B72 000250A7')
'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 \x004\x008\x005\x007\x008\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x005\x004\x002\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x009\x001\x005\x000\x009\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x004\x008\x005\x007\x008\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x005\x004\x002\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x009\x001\x005\x000\x009\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:o:$J½á\x0cE¦\t©\x88Ç¡\x1b\x88'  PRIV(owner='WM/WMCollectionGroupID', data=b'o:$J\xbd\xe1\x0cE\xa6\t\xa9\x88\xc7\xa1\x1b\x88')
'PRIV:WM/WMCollectionID:o:$J½á\x0cE¦\t©\x88Ç¡\x1b\x88'  PRIV(owner='WM/WMCollectionID', data=b'o:$J\xbd\xe1\x0cE\xa6\t\xa9\x88\xc7\xa1\x1b\x88')
'PRIV:WM/WMContentID:û«ÑrÅ\x87ÜL¬Y¾e\x81\x8f®\x17'  PRIV(owner='WM/WMContentID', data=b'\xfb\xab\xd1r\xc5\x87\xdcL\xacY\xbee\x81\x8f\xae\x17')
'TALB' (Album/Movie/Show title)                     'The Anthology 1961-1977 [Disc 1]'
'TBPM' (BPM (beats per minute))                     '138.229'
'TCOM' (Composer)                                   'Curtis Mayfield'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         "I'm So Proud"
'TKEY' (Initial key)                                '2B'
'TLEN' (Length)                                     '169717'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Curtis Mayfield and The Impressions'
'TPE2' (Band/orchestra/accompaniment)               'Curtis Mayfield and The Impressions'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Sequel'
'TRCK' (Track number/Position in set)               '10/26'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', 'chicago soul', 'funk', 'american']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.14 dB'
'TXXX:replaygain_track_peak'                        '0.687332'

========================== row from database ==========================
                                              'id'  1502845
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/i_m so proud.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  169
                                           'genre'  funk or soul
                                        'filesize'  2731524
                                           'mtime'  1628357959
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] i_m so proud funk or soul
                                      'tag_artist'  Curtis Mayfield and The Impressions
                                     'tag_release'  The Anthology 1961-1977 [Disc 1]
                                       'tag_title'  I'm So Proud
                                             'bpm'  138.229
                                    'search_title'  'i':1 'im':3 'm':2 'proud':5 'so':4
                                   'search_artist'  'and':3 'curtis':1 'impressions':5 'mayfield':2 'the':4
                                  'search_release'  '1':8,9 '1961':3 '19611977':5 '1977':4 'anthology':2 'disc':6,7 'the':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'funk':11 'i':7 'loose':3,4 'm':8 'or':12 'proud':10 'so':9 'soul':13 'unsorted':2
                                    'search_combo'  '00poprockelectronic':20 '1':18C,19C '1961':13C '19611977':15C '1977':14C 'and':8B 'anthology':12C 'curtis':6B 'disc':16C,17C 'files':24,25 'funk':30 'i':1A,26 'im':3A 'impressions':10B 'loose':22,23 'm':2A,27 'mayfield':7B 'or':31 'proud':5A,29 'so':4A,28 'soul':32 'the':9B,11C 'unsorted':21
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['soul', 'chicago soul', 'funk', 'american']
                                        'tag_date'  1964
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357959.4337842  (2021-08-07 19:39:19)
                             'size'  2731524