======================== unified (from filesystem) ========================
                                         'bitrate'  '268.966'
                                        'duration'  '167'
                                          'artist'  'Ashbringer'
                                     'text_people'  ''
                                         'release'  'Ykgen'
                                           'title'  'Omen'
                                           '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-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['american', 'black metal', 'atmospheric black metal', 'usa']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '8'
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '127.766'
                                             'key'  '9A'
                                        'acoustid'  'd794be48-4f6d-4097-8609-50cd1f375ebc'
rest: ''

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

'APIC:cover'                                        type PictureType.COVER_FRONT (Cover (front)) b'cover'
                                     
'TALB' (Album/Movie/Show title)                     'Ykgen'
'TBPM' (BPM (beats per minute))                     '127.766'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '2016'
'TDRC' (Recording time)                             '2016'
'TIT2' (Title/songname/content description)         'Omen'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ashbringer'
'TPE2' (Band/orchestra/accompaniment)               'Ashbringer'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Avantgarde Music'
'TRCK' (Track number/Position in set)               '7/8'
'TSO2'                                              'Ashbringer'
'TSOP' (Performer sort order)                       'Ashbringer'
'TXXX:Acoustid Id'                                  'd794be48-4f6d-4097-8609-50cd1f375ebc'
'TXXX:MusicBrainz Album Artist Id'                  '2abc7573-ca8f-4cdc-ab76-465116c0930d'
'TXXX:MusicBrainz Album Id'                         'ef6fbec5-5ad5-40dd-a9d5-004758952e5e'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '2abc7573-ca8f-4cdc-ab76-465116c0930d'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['american', 'black metal', 'atmospheric black metal', 'usa']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.53 dB'
'TXXX:replaygain_track_peak'                        '0.571322'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'47fa5711-70fb-4d89-9f6b-5042e2e3cff0')

========================== row from database ==========================
                                              'id'  1396398
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Ashbringer – Yūgen/Ashbringer - Yūgen - 07 Omen.mp3
                                         'working'  None
                                         'bitrate'  269
                                    'duration_sec'  167
                                           'genre'  eid-metal-black
                                        'filesize'  5887916
                                           'mtime'  1620301376
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal – Yūgen Yūgen 07 eid metal black
                                      'tag_artist'  Ashbringer
                                     'tag_release'  Ykgen
                                       'tag_title'  Omen
                                             'bpm'  127.766
                                    'search_title'  'omen':1
                                   'search_artist'  'ashbringer':1
                                  'search_release'  'ykgen':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'black':7 'eid':5 'metal':6 'yugen':3,4
                                    'search_combo'  '00dwimp':4 '00metal':5 'ashbringer':2B 'black':10 'eid':8 'metal':9 'omen':1A 'ykgen':3C 'yugen':6,7
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['american', 'black metal', 'atmospheric black metal', 'usa']
                                        'tag_date'  2016
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301376.0147362  (2021-05-06 13:42:56)
                             'size'  5887916