======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '357'
                                          'artist'  '椎名林檎'
                                     'text_people'  ''
                                         'release'  '絶頂集 [singles-box]'
                                           'title'  'メロウ'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-UNU-2', 'Q-LOCALNESS-2', 'Q-JZFKS-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'female vocalists', 'japanese', 'j pop', 'j rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan-jrock-shibuyakei;loc-asia-japan;prerock-jb-jazz-unsorted'
                                             'bpm'  '144.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000320B 0000315A 000081A3 00007125 0002BF65 00053065 00008000 00008000 '
 '00004E37 00004E65')
'TALB' (Album/Movie/Show title)                     '絶頂集 [singles-box]'
'TBPM' (BPM (beats per minute))                     '144.5'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan-jrock-shibuyakei',
 'loc-asia-japan',
 'prerock-jb-jazz-unsorted']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'メロウ'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Shiina Ringo & Tokyo Jihen'
'TPE2' (Band/orchestra/accompaniment)               '椎名林檎'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['rock', 'female vocalists', 'japanese', 'j pop', 'j rock']
'TXXX:other'                                        '2000'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.55 dB'
'TXXX:replaygain_track_peak'                        '0.367660'

========================== row from database ==========================
                                              'id'  1476650
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Shiina Ringo & Tokyo Jihen/[2000] 絶頂集 [singles-box]/04 メロウ.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  357
                                           'genre'  loc-asia-japan-jrock-shibuyakei;loc-asia-japan;prerock-jb-jazz-unsorted
                                        'filesize'  5740000
                                           'mtime'  1620540363
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Shiina Ringo & Tokyo Jihen [2000] 04 loc asia japan jrock shibuyakei;loc asia japan;prerock jb jazz unsorted
                                      'tag_artist'  椎名林檎
                                     'tag_release'  絶頂集 [singles-box]
                                       'tag_title'  メロウ
                                             'bpm'  144.5
                                    'search_title'  'merou':2 'メロウ':1
                                   'search_artist'  '椎名林檎':1
                                  'search_release'  'box':3 'singles':2 'singlesbox':4 '絶頂集':1
                                     'search_rest'  '00asia':1 '2000':6,7 'asia':9 'japan':10,16,18 'jazz':21 'jb':20 'jihen':5 'jrock':11 'loc':8,13,15 'prerock':17,19 'ringo':3 'shibuyakei':12,14 'shiina':2 'tokyo':4 'unsorted':22
                                    'search_combo'  '00asia':8 '2000':13,14 'asia':16 'box':6C 'japan':17,23,25 'jazz':28 'jb':27 'jihen':12 'jrock':18 'loc':15,20,22 'merou':2A 'prerock':24,26 'ringo':10 'shibuyakei':19,21 'shiina':9 'singles':5C 'singlesbox':7C 'tokyo':11 'unsorted':29 'メロウ':1A '椎名林檎':3B '絶頂集':4C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['rock', 'female vocalists', 'japanese', 'j pop', 'j rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620540363.176497  (2021-05-09 08:06:03)
                             'size'  5740000