======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '302'
                                          'artist'  '[unknown] - Sublime Frequencies'
                                     'text_people'  ''
                                         'release'  'Radio Pyongyang: Commie Funk And Agit Pop From The Hermit Kingdom'
                                           'title'  'Arirang'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-asia'
                                             'bpm'  '135.728'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00001d8a 00001d45 0000d4dc'
'COMM:iTunNORM:eng'                                 (' 00001d8a 00001d45 0000d4dc 0000d817 000186b7 000186b7 00008000 00007ec9 '
 '00015fbe 00015fd5')
'TALB' (Album/Movie/Show title)                     'Radio Pyongyang: Commie Funk And Agit Pop From The Hermit Kingdom'
'TBPM' (BPM (beats per minute))                     '135.728'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Arirang'
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '302654'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown] - Sublime Frequencies'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Sublime Frequencies'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.305335'

========================== row from database ==========================
                                              'id'  1397011
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/VA - Radio Pyongyang Commie Funk and Agit Pop from the Hermit Kingdom - SF023/06 Arirang.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  302
                                           'genre'  loc-asia
                                        'filesize'  7265761
                                           'mtime'  1652397821
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia VA and from the SF023 06 loc asia
                                      'tag_artist'  [unknown] - Sublime Frequencies
                                     'tag_release'  Radio Pyongyang: Commie Funk And Agit Pop From The Hermit Kingdom
                                       'tag_title'  Arirang
                                             'bpm'  135.728
                                    'search_title'  'arirang':1
                                   'search_artist'  'frequencies':4 'sublime':3 'unknown':1,2
                                  'search_release'  'agit':7 'and':6 'commie':4 'from':9 'funk':5 'hermit':11 'kingdom':12 'pop':8 'pyongyang':2,3 'radio':1 'the':10
                                     'search_rest'  '00asia':1 'and':3 'asia':8 'from':4 'loc':7 'sf023':6 'the':5 'va':2
                                    'search_combo'  '00asia':18 'agit':12C 'and':11C,20 'arirang':1A 'asia':25 'commie':9C 'frequencies':5B 'from':14C,21 'funk':10C 'hermit':16C 'kingdom':17C 'loc':24 'pop':13C 'pyongyang':7C,8C 'radio':6C 'sf023':23 'sublime':4B 'the':15C,22 'unknown':2B,3B 'va':19
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652397821.1500993  (2022-05-13 01:23:41)
                             'size'  7265761