======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '363'
                                          'artist'  'Bruce Haack'
                                     'text_people'  ''
                                         'release'  'Captain Entropy'
                                           'title'  'Walking Eagle'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '9'
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '88.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 0000041C 00000572 00003278 00002E9F 0002983E 0002983E 000076E5 00008000 '
 '00027145 00029827')
'MCDI' (Music CD identifier)                        MCDI(data=b'9\x00+\x009\x006\x00+\x00A\x008\x00B\x00B\x00+\x00F\x00D\x00C\x007\x00+\x001\x003\x000\x003\x003\x00+\x001\x005\x007\x009\x00D\x00+\x001\x007\x00D\x003\x001\x00+\x001\x00E\x007\x009\x001\x00+\x002\x001\x00E\x001\x002\x00+\x002\x005\x000\x00F\x003\x00+\x002\x008\x00B\x005\x00E\x00\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:C\x00D\x00J\x00o\x00u\x00r\x00n\x00a\x00l\x00 \x00J\x00a\x00p\x00a\x00n\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'C\x00D\x00J\x00o\x00u\x00r\x00n\x00a\x00l\x00 \x00J\x00a\x00p\x00a\x00n\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:|ý\x8d\x06\x8cHEN\x91\x1e\x18wåÃÑ«'  PRIV(owner='WM/WMCollectionGroupID', data=b'|\xfd\x8d\x06\x8cHEN\x91\x1e\x18w\xe5\xc3\xd1\xab')
'PRIV:WM/WMCollectionID:|ý\x8d\x06\x8cHEN\x91\x1e\x18wåÃÑ«'  PRIV(owner='WM/WMCollectionID', data=b'|\xfd\x8d\x06\x8cHEN\x91\x1e\x18w\xe5\xc3\xd1\xab')
'PRIV:WM/WMContentID:Î5¦0èþjI\x92\\Ò\x05EêÉ{'       PRIV(owner='WM/WMContentID', data=b'\xce5\xa60\xe8\xfejI\x92\\\xd2\x05E\xea\xc9{')
'TALB' (Album/Movie/Show title)                     'Captain Entropy'
'TBPM' (BPM (beats per minute))                     '88.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         'Walking Eagle'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '363093'
'TPE1' (Lead performer(s)/Soloist(s))               'Bruce Haack'
'TPE2' (Band/orchestra/accompaniment)               'Bruce Haack'
'TPUB' (Publisher)                                  'セブンシーズ'
'TRCK' (Track number/Position in set)               '6/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.678589'

========================== row from database ==========================
                                              'id'  918983
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Bruce Haack/1973 - Bruce Haack - Captain Entropy (Dimension 5) [192k]/06 - walking eagle.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  363
                                           'genre'  electronic-experimental
                                        'filesize'  8718336
                                           'mtime'  1622801510
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1973 (Dimension 5) [192k] 06 walking eagle electronic experimental
                                      'tag_artist'  Bruce Haack
                                     'tag_release'  Captain Entropy
                                       'tag_title'  Walking Eagle
                                             'bpm'  88.9
                                    'search_title'  'eagle':2 'walking':1
                                   'search_artist'  'bruce':1 'haack':2
                                  'search_release'  'captain':1 'entropy':2
                                     'search_rest'  '192k':6,7 '1973':1 '5':4,5 'dimension':2,3 'eagle':9 'electronic':10 'experimental':11 'walking':8
                                    'search_combo'  '192k':12,13 '1973':7 '5':10,11 'bruce':3B 'captain':5C 'dimension':8,9 'eagle':2A,15 'electronic':16 'entropy':6C 'experimental':17 'haack':4B 'walking':1A,14
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             '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-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']
                                        'tag_date'  1974
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1622801509.9843352  (2021-06-04 12:11:49)
                             'size'  8718336