======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '194'
                                          'artist'  "Flipper's Guitar"
                                     'text_people'  '小沢健二-小山田圭吾'
                                         'release'  'Three Cheers for Our Side'
                                           'title'  'Hello'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '13'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock-shibuyakei;set-pl-sced'
                                             'bpm'  '121.994'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000CAC 0000092A 000050D6'
'COMM:iTunNORM:eng'                                 (' 00000CAC 0000092A 000050D6 00003639 0001CC1A 00000F68 000088B1 0000842D '
 '000254F0 00007058')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AC8 0000000000830C28 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '13+977827E39C25B063A387BEE125FE1457+7927997'
'TALB' (Album/Movie/Show title)                     'Three Cheers for Our Side'
'TBPM' (BPM (beats per minute))                     '121.994'
'TCOM' (Composer)                                   '小沢健二-小山田圭吾'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock-shibuyakei', 'set-pl-sced']
'TDRC' (Recording time)                             '1989'
'TENC' (Encoded by)                                 'iTunes v6.0.5.20'
'TIT2' (Title/songname/content description)         'Hello'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               "Flipper's Guitar"
'TPE2' (Band/orchestra/accompaniment)               "Flipper's Guitar"
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/13'
'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:lastfmtags'                                   ['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.34 dB'
'TXXX:replaygain_track_peak'                        '0.529319'

========================== row from database ==========================
                                              'id'  1529396
                                            'path'  /data/Music/Bulk/00localcharacter/Flipper_s Guitar/[1989] Three Cheers for Our Side/01 Hello.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  194
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock-shibuyakei;set-pl-sced
                                        'filesize'  4697426
                                           'mtime'  1621489411
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Flipper_s [1989] 01 loc asia japan;loc asia japan jrock shibuyakei;set pl sced
                                      'tag_artist'  Flipper's Guitar
                                     'tag_release'  Three Cheers for Our Side
                                       'tag_title'  Hello
                                             'bpm'  121.994
                                    'search_title'  'hello':1
                                   'search_artist'  'flipper':1 'flippers':3 'guitar':4 's':2
                                  'search_release'  'cheers':2 'for':3 'our':4 'side':5 'three':1
                                     'search_rest'  '1989':3,4 'asia':6 'flipper':1 'japan':7,9,11 'jrock':12 'loc':5,8,10 'pl':17 's':2 'sced':18 'set':14,16 'shibuyakei':13,15
                                    'search_combo'  '1989':13,14 'asia':16 'cheers':7C 'flipper':2B,11 'flippers':4B 'for':8C 'guitar':5B 'hello':1A 'japan':17,19,21 'jrock':22 'loc':15,18,20 'our':9C 'pl':27 's':3B,12 'sced':28 'set':24,26 'shibuyakei':23,25 'side':10C 'three':6C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['shibuya kei', 'neo acoustic', 'japanese', 'pop', 'j pop']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621489411.4428804  (2021-05-20 07:43:31)
                             'size'  4697426