======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '373'
                                          'artist'  'Klaha'
                                     'text_people'  ''
                                         'release'  'Nostal Lab'
                                           'title'  'Penguin'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'Q-PLAY-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']"
                                     'discogstags'  "['j-pop', 'pop', 'ballad']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock'
                                             'bpm'  '120.830'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '12+9FB804CAA425FA37F30F79885'
'COMM:iTunNORM:eng'                                 (' 000005AB 00000571 00001D05 00001C03 0001D505 0001ADDE 00007BF5 00006F71 '
 '0001FBE7 0003F7E5')
'COMM:iTunes_CDDB_IDs:eng'                          '12+9FB804CAA425FA37F30F79885963875F+2542979'
'PRIV:AverageLevel:Ñ\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xd1\x14\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)                     'Nostal Lab'
'TBPM' (BPM (beats per minute))                     '120.830'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock']
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'iTunes v4.7.0.42'
'TIT2' (Title/songname/content description)         'Penguin'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Klaha'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['j-pop', 'pop', 'ballad']
'TXXX:lastfmtags'                                   ['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.00 dB'
'TXXX:replaygain_track_peak'                        '0.529303'

========================== row from database ==========================
                                              'id'  436517
                                            'path'  /data/Music/Bulk/00localcharacter/Klaha/Nostal Lab/05 Penguin.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  373
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock
                                        'filesize'  8518475
                                           'mtime'  1637330172
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 05 loc asia japan;loc asia japan jrock
                                      'tag_artist'  Klaha
                                     'tag_release'  Nostal Lab
                                       'tag_title'  Penguin
                                             'bpm'  120.83
                                    'search_title'  'penguin':1
                                   'search_artist'  'klaha':1
                                  'search_release'  'lab':2 'nostal':1
                                     'search_rest'  'asia':2 'japan':3,5,7 'jrock':8 'loc':1,4,6
                                    'search_combo'  'asia':6 'japan':7,9,11 'jrock':12 'klaha':2B 'lab':4C 'loc':5,8,10 'nostal':3C 'penguin':1A
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']
                                        'tag_date'  2002
                                     'discogstags'  ['j-pop', 'pop', 'ballad']

============================== file details ==============================
                                           'mtime'  1637330172.1980414  (2021-11-19 14:56:12)
                             'size'  8518475