======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '269'
                                          'artist'  'Shuuji to Akira'
                                     'text_people'  ''
                                         'release'  'Seishun Amigo'
                                           'title'  'Colorful'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '105.094'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000FC9 00001147 000045D1'
'COMM:iTunNORM:eng'                                 (' 00000FC9 00001147 000045D1 000049A5 00011187 00011187 00007D0B 000079B8 '
 '0002BF4E 0002E647')
'TALB' (Album/Movie/Show title)                     'Seishun Amigo'
'TBPM' (BPM (beats per minute))                     '105.094'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Colorful'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Shuuji to Akira'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.389850'

========================== row from database ==========================
                                              'id'  406544
                                            'path'  /data/Music/Bulk/00localcharacter/Shuuji to Akira/Seishun Amigo/02 Colorful.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  269
                                           'genre'  loc-unsorted
                                        'filesize'  6469504
                                           'mtime'  1620401345
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 02 loc unsorted
                                      'tag_artist'  Shuuji to Akira
                                     'tag_release'  Seishun Amigo
                                       'tag_title'  Colorful
                                             'bpm'  105.094
                                    'search_title'  'colorful':1
                                   'search_artist'  'akira':3 'shuuji':1 'to':2
                                  'search_release'  'amigo':2 'seishun':1
                                     'search_rest'  'loc':1 'unsorted':2
                                    'search_combo'  'akira':4B 'amigo':6C 'colorful':1A 'loc':7 'seishun':5C 'shuuji':2B 'to':3B 'unsorted':8
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620401345.3215635  (2021-05-07 17:29:05)
                             'size'  6469504