======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '156'
                                          'artist'  'Mills Brothers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "All The Way 'Round The World"
                                           '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-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'the', 'of', 'and', 'vocal jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '348'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '135.004'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:\x12\x13\x00\x00'                PRIV(owner='AverageLevel', data=b'\x12\x13\x00\x00')
'PRIV:PeakValue:Èk\x00\x00'                         PRIV(owner='PeakValue', data=b'\xc8k\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/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         "All The Way 'Round The World"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '156240'
'TPE1' (Lead performer(s)/Soloist(s))               'Mills Brothers'
'TRCK' (Track number/Position in set)               '348'
'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:lastfmtags'                                   ['jazz', 'the', 'of', 'and', 'vocal jazz']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.46 dB'
'TXXX:replaygain_track_peak'                        '0.416575'

========================== row from database ==========================
                                              'id'  1501579
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-348 - Mills Brothers - All The Way _Round The World.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  156
                                           'genre'  prerock-swing
                                        'filesize'  6248516
                                           'mtime'  1620562585
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 348 _Round prerock swing
                                      'tag_artist'  Mills Brothers
                                     'tag_release'  None
                                       'tag_title'  All The Way 'Round The World
                                             'bpm'  135.004
                                    'search_title'  'all':1 'round':4,5 'the':2 'way':3 'world':6
                                   'search_artist'  'brothers':2 'mills':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1956':6 '348':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'round':8 'swing':10
                                    'search_combo'  '00oldiepop':13 '1956':14 '348':15 'all':1A 'brothers':8B 'country':12 'exotica':10 'jazz':9 'mills':7B 'oldies':11 'prerock':17 'round':4A,5A,16 'swing':18 'the':2A 'way':3A 'world':6A
                                    'tag_tracknum'  348
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'the', 'of', 'and', 'vocal jazz']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562584.5708883  (2021-05-09 14:16:24)
                             'size'  6248516