======================== unified (from filesystem) ========================
                                         'bitrate'  '174.196'
                                        'duration'  '110'
                                          'artist'  'Takashi Tateishi'
                                     'text_people'  ''
                                         'release'  'Capcom Music Generation Famicom Music Complete Works Rockman 1~6'
                                           'title'  'Rockman 2: Staff Roll'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['video game music', 'soundtrack', 'electronic', 'instrumental', 'japanese']"
                                     'discogstags'  "['electronic', 'chiptune']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '43'
                                      'tracktotal'  '45'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '90'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Capcom Music Generation Famicom Music Complete Works Rockman 1~6'
'TBPM' (BPM (beats per minute))                     '90'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TCOP' (Copyright message)                          'Suleputer'
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002-09-20'
'TENC' (Encoded by)                                 '#Gamemp3S / Dalnet'
'TIT2' (Title/songname/content description)         'Rockman 2: Staff Roll'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Takashi Tateishi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/3'
'TPUB' (Publisher)                                  'Suleputer'
'TRCK' (Track number/Position in set)               '43/45'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Tateishi, Takashi'
'TSST' (Set subtitle)                               'Rockman 1 & 2'
'TXXX:ASIN'                                         'B0063S9EWI'
'TXXX:Artists'                                      'Takashi Tateishi'
'TXXX:BARCODE'                                      '4976219800495'
'TXXX:CATALOGNUMBER'                                'CPCA-1064/CPCA-1065/CPCA-1066'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '87c2827a-5f90-44dd-98c9-98f7084f13f1'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/soundtrack'
'TXXX:MusicBrainz Artist Id'                        '979ae797-6018-49e8-b938-825a5f346c76'
'TXXX:MusicBrainz Release Group Id'                 '8bd034b6-f6c5-317b-956b-da00ff23f650'
'TXXX:MusicBrainz Release Track Id'                 'bc55e1ca-b87e-36ad-a8e6-cd4d13595412'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'chiptune']
'TXXX:lastfmtags'                                   ['video game music', 'soundtrack', 'electronic', 'instrumental', 'japanese']
'TXXX:originalyear'                                 '2002'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.10 dB'
'TXXX:replaygain_track_peak'                        '0.455798'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'db79b544-6e35-4bcf-bc7d-fdbf7fb958eb')

========================== row from database ==========================
                                              'id'  790657
                                            'path'  /data/Music/Bulk/0soundtrack/megaman music/Megaman II OST/25 - Megaman OST II - Staff Roll.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  110
                                           'genre'  soundtrack-video
                                        'filesize'  2463642
                                           'mtime'  1636915118
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack megaman music Megaman II OST 25 Megaman OST II soundtrack video
                                      'tag_artist'  Takashi Tateishi
                                     'tag_release'  Capcom Music Generation Famicom Music Complete Works Rockman 1~6
                                       'tag_title'  Rockman 2: Staff Roll
                                             'bpm'  90.0
                                    'search_title'  '2':2,3 'rockman':1 'roll':5 'staff':4
                                   'search_artist'  'takashi':1 'tateishi':2
                                  'search_release'  '1':8 'capcom':1 'complete':5 'famicom':4 'generation':3 'music':2 'rockman':7 'works':6 '~6':9
                                     'search_rest'  '0soundtrack':1 '25':6 'ii':4 'megaman':2 'music':3 'ost':5 'soundtrack':7 'video':8
                                    'search_combo'  '0soundtrack':17 '1':15C '2':2A,3A '25':22 'capcom':8C 'complete':12C 'famicom':11C 'generation':10C 'ii':20 'megaman':18 'music':9C,19 'ost':21 'rockman':1A,14C 'roll':5A 'soundtrack':23 'staff':4A 'takashi':6B 'tateishi':7B 'video':24 'works':13C '~6':16C
                                    'tag_tracknum'  43
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['video game music', 'soundtrack', 'electronic', 'instrumental', 'japanese']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic', 'chiptune']

============================== file details ==============================
                                           'mtime'  1636915118.4231517  (2021-11-14 19:38:38)
                             'size'  2463642