======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '220'
                                          'artist'  'Lady Sovereign'
                                     'text_people'  ''
                                         'release'  'Public Warning'
                                           'title'  '9 To 5'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['grime', 'female vocalists', 'hip hop', 'british', 'rap']"
                                     'discogstags'  "['electronic', 'hip hop', 'uk garage', 'grime']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '116.120'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000423 000004F2 000018C5'
'COMM:iTunNORM:eng'                                 (' 00000423 000004F2 000018C5 0000198C 00033495 00033495 00004759 00003EF1 '
 '00015FA7 0001ADB0')
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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')
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'PRIV:WM/WMCollectionGroupID:\x9c;B\x89Ú¦þL\x89µ\rY,\x9eÙ\x97'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x9c;B\x89\xda\xa6\xfeL\x89\xb5\rY,\x9e\xd9\x97')
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'PRIV:WM/WMContentID:ç4à!©AÎK¾ \x1f,\x98`F\xa0'     PRIV(owner='WM/WMContentID', data=b'\xe74\xe0!\xa9A\xceK\xbe \x1f,\x98`F\xa0')
'TALB' (Album/Movie/Show title)                     'Public Warning'
'TBPM' (BPM (beats per minute))                     '116.120'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         '9 To 5'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lady Sovereign'
'TPUB' (Publisher)                                  'Universal Music TV'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'hip hop', 'uk garage', 'grime']
'TXXX:lastfmtags'                                   ['grime', 'female vocalists', 'hip hop', 'british', 'rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.40 dB'
'TXXX:replaygain_track_peak'                        '0.514039'

========================== row from database ==========================
                                              'id'  1286638
                                            'path'  /data/Music/Bulk/00poprockelectronic/Lady Sovereign/01 Lady Sovereign - 9 to 5.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  220
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  4411777
                                           'mtime'  1620570421
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 01 to hip hop or rnb or rap or turntablism
                                      'tag_artist'  Lady Sovereign
                                     'tag_release'  Public Warning
                                       'tag_title'  9 To 5
                                             'bpm'  116.12
                                    'search_title'  '5':3 '9':1 'to':2
                                   'search_artist'  'lady':1 'sovereign':2
                                  'search_release'  'public':1 'warning':2
                                     'search_rest'  '00poprockelectronic':1 'hip':3 'hop':4 'or':5 'rap':7 'rnb':6 'to':2 'turntablism':8
                                    'search_combo'  '00poprockelectronic':8 '5':3A '9':1A 'hip':10 'hop':11 'lady':4B 'or':12 'public':6C 'rap':14 'rnb':13 'sovereign':5B 'to':2A,9 'turntablism':15 'warning':7C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['grime', 'female vocalists', 'hip hop', 'british', 'rap']
                                        'tag_date'  2006
                                     'discogstags'  ['electronic', 'hip hop', 'uk garage', 'grime']

============================== file details ==============================
                                           'mtime'  1620570421.1640441  (2021-05-09 16:27:01)
                             'size'  4411777