======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '131'
                                          'artist'  'The Offspring'
                                     'text_people'  'The Offspring'
                                         'release'  'The Offspring'
                                           'title'  'Elders'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'punk rock', 'punk', 'alternative', 'rock']"
                                     'discogstags'  "['rock', 'punk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '99.518'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

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'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:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
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'PRIV:WM/WMCollectionGroupID:\x1cFºØ\x8cÊ\x83C¶Î½iUNü>'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x1cF\xba\xd8\x8c\xca\x83C\xb6\xce\xbdiUN\xfc>')
'PRIV:WM/WMCollectionID:\x1cFºØ\x8cÊ\x83C¶Î½iUNü>'  PRIV(owner='WM/WMCollectionID', data=b'\x1cF\xba\xd8\x8c\xca\x83C\xb6\xce\xbdiUN\xfc>')
'PRIV:WM/WMContentID:\x92kñÁþI\x13M\x87\x94Â\x1be\x86\x11º'  PRIV(owner='WM/WMContentID', data=b'\x92k\xf1\xc1\xfeI\x13M\x87\x94\xc2\x1be\x86\x11\xba')
'TALB' (Album/Movie/Show title)                     'The Offspring'
'TBPM' (BPM (beats per minute))                     '99.518'
'TCOM' (Composer)                                   'The Offspring'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Elders'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Offspring'
'TPE2' (Band/orchestra/accompaniment)               'The Offspring'
'TPUB' (Publisher)                                  'Nitro'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'punk']
'TXXX:lastfmtags'                                   ['alternative rock', 'punk rock', 'punk', 'alternative', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.42 dB'
'TXXX:replaygain_track_peak'                        '0.479754'

========================== row from database ==========================
                                              'id'  1419856
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/The Offspring - Offspring/1989 - The Offspring/Offspring (The Offspring) 02 - Elders.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  131
                                           'genre'  rock-gr-punk
                                        'filesize'  2101927
                                           'mtime'  1622659166
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner 1989 (The Offspring) 02 rock gr punk
                                      'tag_artist'  The Offspring
                                     'tag_release'  The Offspring
                                       'tag_title'  Elders
                                             'bpm'  99.518
                                    'search_title'  'elders':1
                                   'search_artist'  'offspring':2 'the':1
                                  'search_release'  'offspring':2 'the':1
                                     'search_rest'  '1989':5 'garage':2 'gr':11 'offspring':8,9 'punk':1 'rock':10 'stoner':4 'surf':3 'the':6,7
                                    'search_combo'  '1989':10 'elders':1A 'garage':7 'gr':16 'offspring':3B,5C,13,14 'punk':6 'rock':15 'stoner':9 'surf':8 'the':2B,4C,11,12
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'punk rock', 'punk', 'alternative', 'rock']
                                        'tag_date'  1989
                                     'discogstags'  ['rock', 'punk']

============================== file details ==============================
                                           'mtime'  1622659165.5389526  (2021-06-02 20:39:25)
                             'size'  2101927