======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '279'
                                          'artist'  'exist†trace'
                                     'text_people'  'miko'
                                         'release'  'Ambivalent Symphony'
                                           'title'  'Ambivalence'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'visual kei', 'female vocalists', 'japanese', 'j rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '7'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;rock-gr-punk-jpunk;loc-asia-japan-jrock-visualkei'
                                             'bpm'  '109.468'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'7\x00+\x009\x006\x00+\x004\x00F\x00C\x005\x00+\x00A\x005\x003\x001\x00+\x00B\x00E\x00A\x005\x00+\x001\x001\x000\x00B\x00D\x00+\x001\x005\x006\x00E\x00B\x00+\x001\x009\x00C\x005\x005\x00+\x001\x00E\x001\x000\x00F\x00\x00\x00')
'PRIV:AverageLevel:{$\x00\x00'                      PRIV(owner='AverageLevel', data=b'{$\x00\x00')
'PRIV:PeakValue:¡~\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1~\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMCollectionID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMContentID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMContentID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Ambivalent Symphony'
'TBPM' (BPM (beats per minute))                     '109.468'
'TCOM' (Composer)                                   'miko'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'rock-gr-punk-jpunk', 'loc-asia-japan-jrock-visualkei']
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Ambivalence'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '280213'
'TPE1' (Lead performer(s)/Soloist(s))               'exist trace'
'TPE2' (Band/orchestra/accompaniment)               'exist†trace'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['metal', 'visual kei', 'female vocalists', 'japanese', 'j rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.10 dB'
'TXXX:replaygain_track_peak'                        '0.263793'

========================== row from database ==========================
                                              'id'  926309
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/exist†trace/Ambivalent Symphony/04 Ambivalence.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  279
                                           'genre'  loc-asia-japan;rock-gr-punk-jpunk;loc-asia-japan-jrock-visualkei
                                        'filesize'  11269750
                                           'mtime'  1621629208
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 04 loc asia japan;rock gr punk jpunk;loc asia japan jrock visualkei
                                      'tag_artist'  exist†trace
                                     'tag_release'  Ambivalent Symphony
                                       'tag_title'  Ambivalence
                                             'bpm'  109.468
                                    'search_title'  'ambivalence':1
                                   'search_artist'  'exist':1 'trace':2
                                  'search_release'  'ambivalent':1 'symphony':2
                                     'search_rest'  '00asia':1 'asia':3 'gr':8 'japan':4,6,14 'jpunk':10,12 'jrock':15 'loc':2,11,13 'punk':9 'rock':5,7 'visualkei':16
                                    'search_combo'  '00asia':6 'ambivalence':1A 'ambivalent':4C 'asia':8 'exist':2B 'gr':13 'japan':9,11,19 'jpunk':15,17 'jrock':20 'loc':7,16,18 'punk':14 'rock':10,12 'symphony':5C 'trace':3B 'visualkei':21
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'visual kei', 'female vocalists', 'japanese', 'j rock']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629207.7378793  (2021-05-21 22:33:27)
                             'size'  11269750