======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '71'
                                          'artist'  'Schola Hungarica'
                                     'text_people'  ''
                                         'release'  'Illuminated'
                                           'title'  'Sanctus (Old Roman Liturgical Chant)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-LOCALNESS-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['meditative', 'gregorian chant', 'classical', 'medieval', 'choral']"
                                     'discogstags'  "['religious', 'medieval', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '14'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '145.790'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'E\x00+\x00B\x006\x00+\x002\x008\x000\x000\x00+\x00B\x001\x002\x001\x00+\x001\x001\x00B\x003\x001\x00+\x001\x006\x004\x003\x00D\x00+\x001\x007\x009\x003\x005\x00+\x001\x00B\x008\x002\x00A\x00+\x001\x00E\x006\x00F\x001\x00+\x002\x008\x005\x00B\x001\x00+\x002\x00B\x002\x00E\x00B\x00+\x002\x00D\x00E\x001\x007\x00+\x003\x000\x009\x003\x005\x00+\x003\x009\x005\x003\x00A\x00+\x003\x00C\x00B\x000\x00E\x00+\x003\x00D\x00D\x003\x000\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')
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'PRIV:WM/WMCollectionGroupID:\x12\x81ÜL /ÂF¼ìØ\x0bàûhw'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x12\x81\xdcL /\xc2F\xbc\xec\xd8\x0b\xe0\xfbhw')
'PRIV:WM/WMCollectionID:\x12\x81ÜL /ÂF¼ìØ\x0bàûhw'  PRIV(owner='WM/WMCollectionID', data=b'\x12\x81\xdcL /\xc2F\xbc\xec\xd8\x0b\xe0\xfbhw')
'PRIV:WM/WMContentID:\x13\x89:)i\x1fzJ£Á8Ëë\x89ºj'  PRIV(owner='WM/WMContentID', data=b'\x13\x89:)i\x1fzJ\xa3\xc18\xcb\xeb\x89\xbaj')
'TALB' (Album/Movie/Show title)                     'Illuminated'
'TBPM' (BPM (beats per minute))                     '145.790'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Sanctus (Old Roman Liturgical Chant)'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Schola Hungarica'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Sub Rosa'
'TRCK' (Track number/Position in set)               '5/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Schola Hungarica'
'TXXX:Artists'                                      'Schola Hungarica'
'TXXX:BARCODE'                                      '5413356804928'
'TXXX:CATALOGNUMBER'                                'SUB CD 027-49'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '520f430a-8e08-48f8-892e-a6c68ac35dcb'
'TXXX:MusicBrainz Album Release Country'            'BE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'bb8c5a4a-50d2-44da-9288-c9078d403ddc'
'TXXX:MusicBrainz Release Group Id'                 'de377430-838f-42c4-a954-984b58d6f413'
'TXXX:MusicBrainz Release Track Id'                 '43a23116-71d6-3f6e-a568-cafbfc7a978a'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['religious', 'medieval', 'classical']
'TXXX:lastfmtags'                                   ['meditative', 'gregorian chant', 'classical', 'medieval', 'choral']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.562117'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'618e3141-1b4e-44f7-9fb0-7b46831b09c8')

========================== row from database ==========================
                                              'id'  473432
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Illuminated (Sub Rosa, 1996) [192k]/05.Sanctus (Scola Hungaria) (Old Roman Liturgical Chant).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  71
                                           'genre'  loc-unsorted
                                        'filesize'  1766845
                                           'mtime'  1621629879
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad (Sub Rosa, 1996) [192k] 05.Sanctus (Scola Hungaria) loc unsorted
                                      'tag_artist'  Schola Hungarica
                                     'tag_release'  Illuminated
                                       'tag_title'  Sanctus (Old Roman Liturgical Chant)
                                             'bpm'  145.79
                                    'search_title'  'chant':6,7 'liturgical':5 'old':2,3 'roman':4 'sanctus':1
                                   'search_artist'  'hungarica':2 'schola':1
                                  'search_release'  'illuminated':1
                                     'search_rest'  '05':16 '05sanctus':18 '1':4,5,6 '192k':14,15 '1996':12,13 'hungaria':21,22 'loc':23 'rosa':10,11 'sanctus':17 'scola':19,20 'sub':8,9 'trad':7 'unsorted':24 'va':1,2 'world':3
                                    'search_combo'  '05':26 '05sanctus':28 '1':14,15,16 '192k':24,25 '1996':22,23 'chant':6A,7A 'hungaria':31,32 'hungarica':9B 'illuminated':10C 'liturgical':5A 'loc':33 'old':2A,3A 'roman':4A 'rosa':20,21 'sanctus':1A,27 'schola':8B 'scola':29,30 'sub':18,19 'trad':17 'unsorted':34 'va':11,12 'world':13
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['meditative', 'gregorian chant', 'classical', 'medieval', 'choral']
                                        'tag_date'  1996
                                     'discogstags'  ['religious', 'medieval', 'classical']

============================== file details ==============================
                                           'mtime'  1621629878.689466  (2021-05-21 22:44:38)
                             'size'  1766845