======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '269'
                                          'artist'  'If'
                                     'text_people'  'Dave Quincy/Trevor Preston'
                                         'release'  'Progsoup 41'
                                           'title'  'Forgotten Roads'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'jazz rock', 'progressive rock', 'rock', 'classic rock']"
                                     'discogstags'  "['noise', 'punk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '142.809'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'8\x00+\x009\x006\x00+\x008\x00A\x00D\x006\x00+\x00D\x009\x00E\x000\x00+\x001\x003\x003\x00C\x00C\x00+\x001\x007\x008\x004\x008\x00+\x001\x00D\x000\x005\x00A\x00+\x002\x002\x00A\x000\x00F\x00+\x002\x007\x00E\x001\x00A\x00+\x002\x00D\x001\x00F\x006\x00\x00\x00')
'PRIV:AverageLevel:{\x1b\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x1b\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\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 \x00 \x004\x001\x001\x009\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x008\x004\x000\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x000\x005\x002\x009\x000\x003\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x004\x001\x001\x009\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x008\x004\x000\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x000\x005\x002\x009\x000\x003\x000\x00\x00\x00')
"PRIV:WM/WMCollectionGroupID:)4\x7f_,\x04\x99O\x8d'íÓs#*®"  PRIV(owner='WM/WMCollectionGroupID', data=b")4\x7f_,\x04\x99O\x8d'\xed\xd3s#*\xae")
"PRIV:WM/WMCollectionID:)4\x7f_,\x04\x99O\x8d'íÓs#*®"  PRIV(owner='WM/WMCollectionID', data=b")4\x7f_,\x04\x99O\x8d'\xed\xd3s#*\xae")
'PRIV:WM/WMContentID:ÙÏA]\t\x16\xadO\x9dm®}óÇ\x03g'  PRIV(owner='WM/WMContentID', data=b'\xd9\xcfA]\t\x16\xadO\x9dm\xae}\xf3\xc7\x03g')
'TALB' (Album/Movie/Show title)                     'Progsoup 41'
'TBPM' (BPM (beats per minute))                     '142.809'
'TCOM' (Composer)                                   'Dave Quincy/Trevor Preston'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Forgotten Roads'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '269786'
'TPE1' (Lead performer(s)/Soloist(s))               'If'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Repertoire'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['noise', 'punk', 'rock']
'TXXX:lastfmtags'                                   ['fusion', 'jazz rock', 'progressive rock', 'rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.84 dB'
'TXXX:replaygain_track_peak'                        '0.469691'

========================== row from database ==========================
                                              'id'  1409129
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 41/2369 if - forgotten roads.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  269
                                           'genre'  rock-cppex-progressive
                                        'filesize'  5394524
                                           'mtime'  1620737377
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2369 if forgotten roads rock cppex progressive
                                      'tag_artist'  If
                                     'tag_release'  Progsoup 41
                                       'tag_title'  Forgotten Roads
                                             'bpm'  142.809
                                    'search_title'  'forgotten':1 'roads':2
                                   'search_artist'  'if':1
                                  'search_release'  '41':2 'progsoup':1
                                     'search_rest'  '2369':3 'classicprogpsy':1 'cppex':8 'forgotten':5 'if':4 'progressive':9 'progsoup':2 'roads':6 'rock':7
                                    'search_combo'  '2369':8 '41':5C 'classicprogpsy':6 'cppex':13 'forgotten':1A,10 'if':3B,9 'progressive':14 'progsoup':4C,7 'roads':2A,11 'rock':12
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'jazz rock', 'progressive rock', 'rock', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['noise', 'punk', 'rock']

============================== file details ==============================
                                           'mtime'  1620737376.727329  (2021-05-11 14:49:36)
                             'size'  5394524