======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '275'
                                          'artist'  'Cannonball Adderley & John Coltrane'
                                     'text_people'  'John Coltrane'
                                         'release'  'radio jazz 13'
                                           'title'  'Grand  central'
                                           'quals'  ("['Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-BUSY-3', 'Q-GRIT-1', 'Q-PLAY-2', "
 "'q-bass-4', 'Q-CHART-2', 'Q-JZFKS-2', 'Q-OLDST-2', 'q-drums-2', 'q-other-3', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['jazz', 'saxophone', 'bebop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '127.5'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::deu'                                         ('Cannonball Adderley - alto sax, john Coltane - tenor sax, Wynton Kelly - '
 'piano, Paul Chambers - bass, Jimmy Cobb - drums .')
'MCDI' (Music CD identifier)                        MCDI(data=b'6\x00+\x009\x006\x00+\x005\x003\x00A\x008\x00+\x00C\x001\x00F\x008\x00+\x001\x002\x007\x00A\x004\x00+\x001\x007\x008\x005\x00E\x00+\x001\x00D\x00B\x001\x00C\x00+\x002\x005\x00A\x001\x00E\x00\x00\x00')
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'PRIV:PeakValue:c\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'c\x7f\x00\x00')
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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/WMCollectionID:¾ÈKë\x88£ñG\x94§©¿'\xa03\x87"  PRIV(owner='WM/WMCollectionID', data=b"\xbe\xc8K\xeb\x88\xa3\xf1G\x94\xa7\xa9\xbf'\xa03\x87")
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'PRIV:ZuneMediaID:\x00\nÔÙ\x00\x01Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneMediaID', data=b'\x00\n\xd4\xd9\x00\x01\xdb\x11\x89\xca\x00\x19\xb9*93')
'TALB' (Album/Movie/Show title)                     'radio jazz 13'
'TBPM' (BPM (beats per minute))                     '127.5'
'TCOM' (Composer)                                   'John Coltrane'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Grand  central'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '275546'
'TPE1' (Lead performer(s)/Soloist(s))               'Cannonball Adderley & John Coltrane'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Emarcy'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'saxophone', 'bebop']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.87 dB'
'TXXX:replaygain_track_peak'                        '0.995241'

========================== row from database ==========================
                                              'id'  1482252
                                            'path'  /data/Music/Bulk/00poprockelectronic/radio jazz 13/Cannonball Adderley & John Coltrane - grand  central.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  275
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  11026432
                                           'mtime'  1620541346
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic grand prerock jb unsorted
                                      'tag_artist'  Cannonball Adderley & John Coltrane
                                     'tag_release'  radio jazz 13
                                       'tag_title'  Grand  central
                                             'bpm'  127.5
                                    'search_title'  'central':2 'grand':1
                                   'search_artist'  'adderley':2 'cannonball':1 'coltrane':4 'john':3
                                  'search_release'  'jazz':2 'radio':1
                                     'search_rest'  '00poprockelectronic':1 'grand':2 'jb':4 'prerock':3 'unsorted':5
                                    'search_combo'  '00poprockelectronic':9 'adderley':4B 'cannonball':3B 'central':2A 'coltrane':6B 'grand':1A,10 'jazz':8C 'jb':12 'john':5B 'prerock':11 'radio':7C 'unsorted':13
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['jazz', 'saxophone', 'bebop']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620541346.2217634  (2021-05-09 08:22:26)
                             'size'  11026432