======================== unified (from filesystem) ========================
                                         'bitrate'  '244.443'
                                        'duration'  '207'
                                          'artist'  'Blood Stain Child'
                                     'text_people'  ''
                                         'release'  'Silence Of Northern Hell'
                                           'title'  'Infernal World'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['death metal', 'trance metal', 'metal', 'japanese', 'melodic death metal', "
 "'j metal']")
                                     'discogstags'  "['electronic', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal-death-melodic;eid-metal;loc-asia-japan'
                                             'bpm'  '104'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/WMCollectionID:\x1eôÍY\x1cÖ\x04F\xad\x1d^$^Ó\x85²'  PRIV(owner='WM/WMCollectionID', data=b'\x1e\xf4\xcdY\x1c\xd6\x04F\xad\x1d^$^\xd3\x85\xb2')
'PRIV:WM/WMContentID:Õó\x84ò\x06\x7fäO\xadî¼\x90íÒ\x81\x9c'  PRIV(owner='WM/WMContentID', data=b'\xd5\xf3\x84\xf2\x06\x7f\xe4O\xad\xee\xbc\x90\xed\xd2\x81\x9c')
'TALB' (Album/Movie/Show title)                     'Silence Of Northern Hell'
'TBPM' (BPM (beats per minute))                     '104'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death-melodic', 'eid-metal', 'loc-asia-japan']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Infernal World'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '207733'
'TPE1' (Lead performer(s)/Soloist(s))               'Blood Stain Child'
'TPE2' (Band/orchestra/accompaniment)               'Blood Stain Child'
'TPUB' (Publisher)                                  'Pony Canyon'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'rock']
'TXXX:lastfmtags'                                   ['death metal',
 'trance metal',
 'metal',
 'japanese',
 'melodic death metal',
 'j metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.82 dB'
'TXXX:replaygain_track_peak'                        '0.319065'

========================== row from database ==========================
                                              'id'  1402175
                                            'path'  /data/Music/Bulk/00dwimp/00metal/00death/Blood Stain Child/Silence Of Northern Hell/Blood Stain Child-Silence Of Northern Hell-Infernal World.mp3
                                         'working'  None
                                         'bitrate'  244
                                    'duration_sec'  207
                                           'genre'  eid-metal-death-melodic;eid-metal;loc-asia-japan
                                        'filesize'  6351908
                                           'mtime'  1620300540
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 00death eid metal death melodic;eid metal;loc asia japan
                                      'tag_artist'  Blood Stain Child
                                     'tag_release'  Silence Of Northern Hell
                                       'tag_title'  Infernal World
                                             'bpm'  104.0
                                    'search_title'  'infernal':1 'world':2
                                   'search_artist'  'blood':1 'child':3 'stain':2
                                  'search_release'  'hell':4 'northern':3 'of':2 'silence':1
                                     'search_rest'  '00death':3 '00dwimp':1 '00metal':2 'asia':15 'death':6 'eid':4,8,10 'japan':16 'loc':12,14 'melodic':7,9 'metal':5,11,13
                                    'search_combo'  '00death':12 '00dwimp':10 '00metal':11 'asia':24 'blood':3B 'child':5B 'death':15 'eid':13,17,19 'hell':9C 'infernal':1A 'japan':25 'loc':21,23 'melodic':16,18 'metal':14,20,22 'northern':8C 'of':7C 'silence':6C 'stain':4B 'world':2A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['death metal', 'trance metal', 'metal', 'japanese', 'melodic death metal', 'j metal']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic', 'rock']

============================== file details ==============================
                                           'mtime'  1620300539.955535  (2021-05-06 13:28:59)
                             'size'  6351908