======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '189'
                                          'artist'  'Mitch Miller & His Orch. & Chorus'
                                     'text_people'  ''
                                         'release'  'Greatest Hits [Columbia/Legacy]'
                                           'title'  'Theme Song From (Song For A Summer Night)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '055'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '146.000'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:·\x15\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xb7\x15\x00\x00')
'PRIV:PeakValue:\x18h\x00\x00'                      PRIV(owner='PeakValue', data=b'\x18h\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:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x009\x008\x000\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x003\x006\x007\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x002\x004\x006\x001\x009\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x009\x008\x000\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x003\x006\x007\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x002\x004\x006\x001\x009\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:¥\x93\x85a7\x86QB¯i\x0b\x1fø\x15û\x91'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xa5\x93\x85a7\x86QB\xafi\x0b\x1f\xf8\x15\xfb\x91')
'PRIV:WM/WMCollectionID:¥\x93\x85a7\x86QB¯i\x0b\x1fø\x15û\x91'  PRIV(owner='WM/WMCollectionID', data=b'\xa5\x93\x85a7\x86QB\xafi\x0b\x1f\xf8\x15\xfb\x91')
'PRIV:WM/WMContentID:\x8b±|\r\x8bà"O±\x00\x8e\x13\x8bcÅ\x13'  PRIV(owner='WM/WMContentID', data=b'\x8b\xb1|\r\x8b\xe0"O\xb1\x00\x8e\x13\x8bc\xc5\x13')
'TALB' (Album/Movie/Show title)                     'Greatest Hits [Columbia/Legacy]'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Theme Song From (Song For A Summer Night)'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '189533'
'TPE1' (Lead performer(s)/Soloist(s))               'Mitch Miller & His Orch. & Chorus'
'TPUB' (Publisher)                                  'Columbia/Legacy'
'TRCK' (Track number/Position in set)               '055'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.91 dB'
'TXXX:replaygain_track_peak'                        '0.483225'

========================== row from database ==========================
                                              'id'  1443171
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-055 - Mitch Miller & His Orch. & Chorus - Theme Song From (Song For A Summer Night).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  189
                                           'genre'  prerock-swing
                                        'filesize'  7583413
                                           'mtime'  1620562561
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 055 prerock swing
                                      'tag_artist'  Mitch Miller & His Orch. & Chorus
                                     'tag_release'  Greatest Hits [Columbia/Legacy]
                                       'tag_title'  Theme Song From (Song For A Summer Night)
                                             'bpm'  146.0
                                    'search_title'  'a':6 'for':5 'from':3 'night':8,9 'song':2,4 'summer':7 'theme':1
                                   'search_artist'  'chorus':6 'his':3 'miller':2 'mitch':1 'orch':4,5
                                  'search_release'  'columbia':3 'columbialegacy':5 'greatest':1 'hits':2 'legacy':4
                                     'search_rest'  '00oldiepop':5 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':25 '1956':26 'a':6A 'chorus':15B 'columbia':18C 'columbialegacy':20C 'country':24 'exotica':22 'for':5A 'from':3A 'greatest':16C 'his':12B 'hits':17C 'jazz':21 'legacy':19C 'miller':11B 'mitch':10B 'night':8A,9A 'oldies':23 'orch':13B,14B 'prerock':27 'song':2A,4A 'summer':7A 'swing':28 'theme':1A
                                    'tag_tracknum'  55
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562560.8644302  (2021-05-09 14:16:00)
                             'size'  7583413