======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '251'
                                          'artist'  'Ulfuls'
                                     'text_people'  ''
                                         'release'  'ええねん'
                                           'title'  '忘れちまえ'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['japanese', 'j-rock', 'rock', 'j-pop', 'ulfuls']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '15'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jpop'
                                             'bpm'  '146'
                                             'key'  '11B'
                                        'acoustid'  'bcb702ce-1dbb-4434-9105-d6065eff1d1b'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00001B37 00001C00 000073D6'
'COMM:iTunNORM:eng'                                 (' 00001B37 00001C00 000073D6 00005D36 00038287 00013897 00008000 00008000 '
 '00009C57 0000EA60')
'TALB' (Album/Movie/Show title)                     'ええねん'
'TBPM' (BPM (beats per minute))                     '146'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jpop']
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-12-10'
'TENC' (Encoded by)                                 'iTunes v2.0.4'
'TIT2' (Title/songname/content description)         '忘れちまえ'
'TKEY' (Initial key)                                '11B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ulfuls'
'TPE2' (Band/orchestra/accompaniment)               'Ulfuls'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Capitol Records'
'TRCK' (Track number/Position in set)               '8/15'
'TSO2'                                              'Ulfuls'
'TSOP' (Performer sort order)                       'Ulfuls'
'TXXX:ASIN'                                         'B0000TCMM0'
'TXXX:Acoustid Id'                                  'bcb702ce-1dbb-4434-9105-d6065eff1d1b'
'TXXX:Artists'                                      'Ulfuls'
'TXXX:MusicBrainz Album Artist Id'                  '07e857bd-ca54-4754-ba6a-a0f3a5d7d1c4'
'TXXX:MusicBrainz Album Id'                         '22f493d8-5a40-4c4d-84d2-9c20142126af'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '07e857bd-ca54-4754-ba6a-a0f3a5d7d1c4'
'TXXX:MusicBrainz Release Group Id'                 'f98caa22-f8e4-3bea-bf4e-05a0d9a3b876'
'TXXX:MusicBrainz Release Track Id'                 '9da5edd5-b8a9-3eae-a891-d4873e32f429'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Jpan'
'TXXX:discogstags'                                  ['rock', 'pop rock']
'TXXX:lastfmtags'                                   ['japanese', 'j-rock', 'rock', 'j-pop', 'ulfuls']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.18 dB'
'TXXX:replaygain_track_peak'                        '0.352665'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'7de78652-ab77-4738-9607-8649b1b10be0')

========================== row from database ==========================
                                              'id'  926175
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Ulfuls/[2003] ええねん/1-08 忘れちまえ.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  251
                                           'genre'  loc-asia-japan;loc-asia-japan-jpop
                                        'filesize'  6066630
                                           'mtime'  1622821851
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia [2003] 1 08 loc asia japan;loc asia japan jpop
                                      'tag_artist'  Ulfuls
                                     'tag_release'  ええねん
                                       'tag_title'  忘れちまえ
                                             'bpm'  146.0
                                    'search_title'  '忘retimae':2 '忘れちまえ':1
                                   'search_artist'  'ulfuls':1
                                  'search_release'  'eenen':2 'ええねん':1
                                     'search_rest'  '00asia':1 '1':4 '2003':2,3 'asia':6 'japan':7,9,11 'jpop':12 'loc':5,8,10
                                    'search_combo'  '00asia':6 '1':9 '2003':7,8 'asia':11 'eenen':5C 'japan':12,14,16 'jpop':17 'loc':10,13,15 'ulfuls':3B 'ええねん':4C '忘retimae':2A '忘れちまえ':1A
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['japanese', 'j-rock', 'rock', 'j-pop', 'ulfuls']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1622821850.8262546  (2021-06-04 17:50:50)
                             'size'  6066630