======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '359'
                                          'artist'  'Dimmu Borgir'
                                     'text_people'  ''
                                         'release'  'For all tid'
                                           'title'  'Under korpens vinger'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['melodic black metal', 'symphonic black metal', 'black metal', 'metal', "
 "'norwegian']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '11'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '136.828'
                                             'key'  '9A'
                                        'acoustid'  '2f50bdcf-1448-4d4f-a298-ec93367e711d'
rest: ''

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

'PRIV:AverageLevel:\x8a\x1f\x00\x00'                PRIV(owner='AverageLevel', data=b'\x8a\x1f\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\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')
'TALB' (Album/Movie/Show title)                     'For all tid'
'TBPM' (BPM (beats per minute))                     '136.828'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Under korpens vinger'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dimmu Borgir'
'TPE2' (Band/orchestra/accompaniment)               'Dimmu Borgir'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Nuclear Blast/Nuclear Blast'
'TRCK' (Track number/Position in set)               '2/11'
'TSO2'                                              'Dimmu Borgir'
'TSOP' (Performer sort order)                       'Dimmu Borgir'
'TSRC' (ISRC (international standard recording code))  'DED839738302'
'TXXX:Acoustid Id'                                  '2f50bdcf-1448-4d4f-a298-ec93367e711d'
'TXXX:BARCODE'                                      '727361627928'
'TXXX:CATALOGNUMBER'                                '27361 62792/NB 279-2'
'TXXX:MusicBrainz Album Artist Id'                  '17167af8-c1da-45cc-bba2-9d23f068b7a3'
'TXXX:MusicBrainz Album Id'                         '8c09cd4e-dab2-4c43-9b47-3f2bbee9cf9b'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '17167af8-c1da-45cc-bba2-9d23f068b7a3'
'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'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['melodic black metal',
 'symphonic black metal',
 'black metal',
 'metal',
 'norwegian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.62 dB'
'TXXX:replaygain_track_peak'                        '0.361903'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e954e9e0-6da5-4319-9b06-8009cc124ceb')

========================== row from database ==========================
                                              'id'  1392341
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Dimmu Borgir/For All Tid/02 - Under Korpens Vinger.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  359
                                           'genre'  eid-metal-black
                                        'filesize'  11527717
                                           'mtime'  1620301622
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal All Tid 02 Korpens Vinger eid metal black
                                      'tag_artist'  Dimmu Borgir
                                     'tag_release'  For all tid
                                       'tag_title'  Under korpens vinger
                                             'bpm'  136.828
                                    'search_title'  'korpens':2 'under':1 'vinger':3
                                   'search_artist'  'borgir':2 'dimmu':1
                                  'search_release'  'all':2 'for':1 'tid':3
                                     'search_rest'  '00dwimp':1 '00metal':2 'all':3 'black':9 'eid':7 'korpens':5 'metal':8 'tid':4 'vinger':6
                                    'search_combo'  '00dwimp':9 '00metal':10 'all':7C,11 'black':17 'borgir':5B 'dimmu':4B 'eid':15 'for':6C 'korpens':2A,13 'metal':16 'tid':8C,12 'under':1A 'vinger':3A,14
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['melodic black metal', 'symphonic black metal', 'black metal', 'metal', 'norwegian']
                                        'tag_date'  2000
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301621.9521132  (2021-05-06 13:47:01)
                             'size'  11527717