======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '355'
                                          'artist'  'Teruyuki Nobuchika'
                                     'text_people'  ''
                                         'release'  'Sonorite'
                                           'title'  'Requiem'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-1', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'score', 'electronic', 'japanese', 'ambient']"
                                     'discogstags'  "['electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '115.854'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000141 0000014D 0000257A 00002BD8 00045F00 0004E3CA 0000797B 00007999 '
 '00043FCC 0004892D')
'TALB' (Album/Movie/Show title)                     'Sonorite'
'TBPM' (BPM (beats per minute))                     '115.854'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Requiem'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Teruyuki Nobuchika'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'ambient']
'TXXX:lastfmtags'                                   ['piano', 'score', 'electronic', 'japanese', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.798840'
'USLT:Converted from Lyrics3 v2.00:XXX'             ' '

========================== row from database ==========================
                                              'id'  1353054
                                            'path'  /data/Music/Bulk/00poprockelectronic/00calmer/Teruyuki Nobuchika - Sonorite/08 Requiem.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  355
                                           'genre'  electronic
                                        'filesize'  8622150
                                           'mtime'  1636913468
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00calmer 08 electronic
                                      'tag_artist'  Teruyuki Nobuchika
                                     'tag_release'  Sonorite
                                       'tag_title'  Requiem
                                             'bpm'  115.854
                                    'search_title'  'requiem':1
                                   'search_artist'  'nobuchika':2 'teruyuki':1
                                  'search_release'  'sonorite':1
                                     'search_rest'  '00calmer':2 '00poprockelectronic':1 'electronic':3
                                    'search_combo'  '00calmer':6 '00poprockelectronic':5 'electronic':7 'nobuchika':3B 'requiem':1A 'sonorite':4C 'teruyuki':2B
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'score', 'electronic', 'japanese', 'ambient']
                                        'tag_date'  2011
                                     'discogstags'  ['electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1636913468.1072853  (2021-11-14 19:11:08)
                             'size'  8622150