======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '174'
                                          'artist'  'Leroy Van Dyke'
                                     'text_people'  ''
                                         'release'  'Treasured Tunes, Vol. 1'
                                           'title'  'Auctioneer'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'male vocalists', '60s', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '158'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '118.290'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x003\x003\x00E\x002\x00+\x006\x003\x008\x008\x00+\x008\x00A\x007\x005\x00+\x00B\x008\x00B\x000\x00+\x00E\x004\x00A\x00E\x00+\x001\x000\x00A\x00D\x001\x00+\x001\x003\x006\x005\x002\x00+\x001\x005\x00A\x008\x00B\x00+\x001\x007\x00B\x00D\x008\x00+\x001\x00A\x005\x003\x001\x00+\x001\x00C\x00E\x00E\x009\x00+\x001\x00F\x00F\x00E\x005\x00+\x002\x002\x008\x000\x008\x00+\x002\x005\x002\x00E\x009\x00+\x002\x007\x00C\x005\x004\x00+\x002\x00B\x003\x000\x009\x00+\x002\x00D\x00E\x007\x001\x00+\x003\x000\x00A\x006\x008\x00+\x003\x003\x003\x001\x00C\x00+\x003\x005\x002\x004\x008\x00\x00\x00')
'PRIV:AverageLevel:È\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xc8\x14\x00\x00')
'PRIV:PeakValue:ü\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfc\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 \x003\x000\x005\x001\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x005\x005\x005\x003\x009\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x000\x005\x001\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x005\x005\x005\x003\x009\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:¯µ\x03âçËCB\x97\x97ª³êp\xadì'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xaf\xb5\x03\xe2\xe7\xcbCB\x97\x97\xaa\xb3\xeap\xad\xec')
'PRIV:WM/WMCollectionID:¯µ\x03âçËCB\x97\x97ª³êp\xadì'  PRIV(owner='WM/WMCollectionID', data=b'\xaf\xb5\x03\xe2\xe7\xcbCB\x97\x97\xaa\xb3\xeap\xad\xec')
"PRIV:WM/WMContentID:ÏT«\x00ùM'LµA\x1a/\x8f}\x95g"  PRIV(owner='WM/WMContentID', data=b"\xcfT\xab\x00\xf9M'L\xb5A\x1a/\x8f}\x95g")
'TALB' (Album/Movie/Show title)                     'Treasured Tunes, Vol. 1'
'TBPM' (BPM (beats per minute))                     '118.290'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Auctioneer'
'TKEY' (Initial key)                                '4B'
'TLEN' (Length)                                     '175093'
'TPE1' (Lead performer(s)/Soloist(s))               'Leroy Van Dyke'
'TPUB' (Publisher)                                  'Stardust'
'TRCK' (Track number/Position in set)               '158'
'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'                                   ['country', 'male vocalists', '60s', 'classic country']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.34 dB'
'TXXX:replaygain_track_peak'                        '0.420791'

========================== row from database ==========================
                                              'id'  1427320
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-158 - Leroy Van Dyke - Auctioneer.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  174
                                           'genre'  prerock-unsorted
                                        'filesize'  7013762
                                           'mtime'  1621698323
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 158 prerock unsorted
                                      'tag_artist'  Leroy Van Dyke
                                     'tag_release'  Treasured Tunes, Vol. 1
                                       'tag_title'  Auctioneer
                                             'bpm'  118.29
                                    'search_title'  'auctioneer':1
                                   'search_artist'  'dyke':3 'leroy':1 'van':2
                                  'search_release'  '1':6 'treasured':1 'tunes':2,3 'vol':4,5
                                     'search_rest'  '00oldiepop':5 '158':7 '1957':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':15 '1':10C '158':17 '1957':16 'auctioneer':1A 'country':14 'dyke':4B 'exotica':12 'jazz':11 'leroy':2B 'oldies':13 'prerock':18 'treasured':5C 'tunes':6C,7C 'unsorted':19 'van':3B 'vol':8C,9C
                                    'tag_tracknum'  158
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['country', 'male vocalists', '60s', 'classic country']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698323.321874  (2021-05-22 17:45:23)
                             'size'  7013762