======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '540'
                                          'artist'  'ゆらゆら帝国'
                                     'text_people'  ''
                                         'release'  'Non-Mainstream Music Sampler 4'
                                           'title'  'ユラユラウゴク'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-2', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['japanese', 'psychedelic', 'psychedelic rock', 'rock', 'j-rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '90'
                                             'key'  '4A'
                                        'acoustid'  '9ed6996d-2b2a-4393-b222-aa02021c3ca7'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Non-Mainstream Music Sampler 4'
'TBPM' (BPM (beats per minute))                     '90'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998-04-15'
'TIT2' (Title/songname/content description)         'ユラユラウゴク'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'ゆらゆら帝国'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'MIDI inc.'
'TRCK' (Track number/Position in set)               '3/11'
'TSO2'                                              'Yura Yura Teikoku'
'TSOP' (Performer sort order)                       'Yura Yura Teikoku'
'TXXX:Acoustid Id'                                  '9ed6996d-2b2a-4393-b222-aa02021c3ca7'
'TXXX:Artists'                                      'ゆらゆら帝国'
'TXXX:BARCODE'                                      '4988034204204'
'TXXX:CATALOGNUMBER'                                'MDCL-1329'
'TXXX:MusicBrainz Album Artist Id'                  'ae6c9840-240d-4f53-a56a-b5ff3da19550'
'TXXX:MusicBrainz Album Id'                         '16915fcb-0b99-44bf-b39b-39f577186d97'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'ae6c9840-240d-4f53-a56a-b5ff3da19550'
'TXXX:MusicBrainz Release Group Id'                 '75a32741-74f7-4034-ba54-ed36822f1ab9'
'TXXX:MusicBrainz Release Track Id'                 '4d630709-e303-3f3d-ab27-7374106328ba'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Jpan'
'TXXX:lastfmtags'                                   ['japanese', 'psychedelic', 'psychedelic rock', 'rock', 'j-rock']
'TXXX:originalyear'                                 '1998'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.71 dB'
'TXXX:replaygain_track_peak'                        '0.436971'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'75c52101-c61c-4a13-97d1-e004f142aa55')

========================== row from database ==========================
                                              'id'  313038
                                            'path'  /data/Music/Bulk/00localcharacter/Non-Mainstream Music Sampler 4/Yura Yura Teikoku - Yura Yura Ugoku.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  540
                                           'genre'  loc-unsorted
                                        'filesize'  8703253
                                           'mtime'  1620401249
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Yura Yura Teikoku Yura Yura Ugoku loc unsorted
                                      'tag_artist'  ゆらゆら帝国
                                     'tag_release'  Non-Mainstream Music Sampler 4
                                       'tag_title'  ユラユラウゴク
                                             'bpm'  90.0
                                    'search_title'  'yurayuraukoku':2 'ユラユラウゴク':1
                                   'search_artist'  'yurayura帝国':2 'ゆらゆら帝国':1
                                  'search_release'  '4':6 'mainstream':2 'music':4 'non':1 'nonmainstream':3 'sampler':5
                                     'search_rest'  'loc':4 'teikoku':2 'ugoku':3 'unsorted':5 'yura':1
                                    'search_combo'  '4':10C 'loc':14 'mainstream':6C 'music':8C 'non':5C 'nonmainstream':7C 'sampler':9C 'teikoku':12 'ugoku':13 'unsorted':15 'yura':11 'yurayuraukoku':2A 'yurayura帝国':4B 'ゆらゆら帝国':3B 'ユラユラウゴク':1A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['japanese', 'psychedelic', 'psychedelic rock', 'rock', 'j-rock']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620401249.4707088  (2021-05-07 17:27:29)
                             'size'  8703253