======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '84'
                                          'artist'  'Forever Slave'
                                     'text_people'  ''
                                         'release'  'Schwarzer Engel'
                                           'title'  'Intro'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', "
 "'gothic metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '3'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-doom or gothic'
                                             'bpm'  '114.156'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=102, count=0)
'PRIV:AverageLevel:\x14\x13\x00\x00'                PRIV(owner='AverageLevel', data=b'\x14\x13\x00\x00')
'PRIV:PeakValue:ig\x00\x00'                         PRIV(owner='PeakValue', data=b'ig\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')
'TALB' (Album/Movie/Show title)                     'Schwarzer Engel'
'TBPM' (BPM (beats per minute))                     '114.156'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-doom or gothic'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Intro'
'TKEY' (Initial key)                                '11B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Forever Slave'
'TPE2' (Band/orchestra/accompaniment)               'Forever Slave'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  '[no label]'
'TRCK' (Track number/Position in set)               '1/3'
'TSO2'                                              'Forever Slave'
'TSOP' (Performer sort order)                       'Forever Slave'
'TXXX:FMPS_Rating'                                  '0.4'
'TXXX:MusicBrainz Album Artist Id'                  '93ec1a85-5456-4984-bb84-d5437195c850'
'TXXX:MusicBrainz Album Id'                         'c0cfbe2a-6e22-4461-b5e4-cd397904c012'
'TXXX:MusicBrainz Album Release Country'            'ES'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'other'
'TXXX:MusicBrainz Artist Id'                        '93ec1a85-5456-4984-bb84-d5437195c850'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['female vocalists',
 'gothic',
 'female fronted metal',
 'symphonic metal',
 'gothic metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.36 dB'
'TXXX:replaygain_track_peak'                        '0.480401'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'42f3b0bb-e435-4892-a29e-98847a3b7dd6')

========================== row from database ==========================
                                              'id'  1392648
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Forever Slave/2001 - Schwarzer Engel (demo)/Intro.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  84
                                           'genre'  eid-metal-doom or gothic
                                        'filesize'  1352902
                                           'mtime'  1620310292
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 2001 (demo) eid metal doom gothic
                                      'tag_artist'  Forever Slave
                                     'tag_release'  Schwarzer Engel
                                       'tag_title'  Intro
                                             'bpm'  114.156
                                    'search_title'  'intro':1
                                   'search_artist'  'forever':1 'slave':2
                                  'search_release'  'engel':2 'schwarzer':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '2001':3 'demo':4,5 'doom':8 'eid':6 'gothic':9 'metal':7
                                    'search_combo'  '00dwimp':6 '00metal':7 '2001':8 'demo':9,10 'doom':13 'eid':11 'engel':5C 'forever':2B 'gothic':14 'intro':1A 'metal':12 'schwarzer':4C 'slave':3B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310292.207132  (2021-05-06 16:11:32)
                             'size'  1352902