======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '178'
                                          'artist'  'Kay Starr'
                                     'text_people'  ''
                                         'release'  'Your Hit Parade: 1956'
                                           'title'  'The Rock & Roll Waltz'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'female vocalists', '50s', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '005'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '107.951'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:\x06\x12\x00\x00'                PRIV(owner='AverageLevel', data=b'\x06\x12\x00\x00')
'PRIV:PeakValue:4h\x00\x00'                         PRIV(owner='PeakValue', data=b'4h\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')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x001\x002\x003\x003\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x007\x005\x004\x008\x009\x006\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x001\x002\x003\x003\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x007\x005\x004\x008\x009\x006\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:þ\x16ý\x0b%8/H\x89\x860Ý®x**'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xfe\x16\xfd\x0b%8/H\x89\x860\xdd\xaex**')
'PRIV:WM/WMCollectionID:þ\x16ý\x0b%8/H\x89\x860Ý®x**'  PRIV(owner='WM/WMCollectionID', data=b'\xfe\x16\xfd\x0b%8/H\x89\x860\xdd\xaex**')
'PRIV:WM/WMContentID:\x14¨Ú\x17cÑÂH\x90ñÌ^\x1cv\x88\x1f'  PRIV(owner='WM/WMContentID', data=b'\x14\xa8\xda\x17c\xd1\xc2H\x90\xf1\xcc^\x1cv\x88\x1f')
'TALB' (Album/Movie/Show title)                     'Your Hit Parade: 1956'
'TBPM' (BPM (beats per minute))                     '107.951'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'The Rock & Roll Waltz'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '178133'
'TPE1' (Lead performer(s)/Soloist(s))               'Kay Starr'
'TPUB' (Publisher)                                  'Time-Life'
'TRCK' (Track number/Position in set)               '005'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'female vocalists', '50s', 'oldies', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.475083'

========================== row from database ==========================
                                              'id'  1439672
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-005 - Kay Starr - The Rock & Roll Waltz.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  178
                                           'genre'  prerock-vocal
                                        'filesize'  7127045
                                           'mtime'  1621853344
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 005 prerock vocal
                                      'tag_artist'  Kay Starr
                                     'tag_release'  Your Hit Parade: 1956
                                       'tag_title'  The Rock & Roll Waltz
                                             'bpm'  107.951
                                    'search_title'  'rock':2 'roll':3 'the':1 'waltz':4
                                   'search_artist'  'kay':1 'starr':2
                                  'search_release'  '1956':5 'hit':2 'parade':3,4 'your':1
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6 'vocal':7
                                    'search_combo'  '00oldiepop':16 '1956':11C 'country':15 'exotica':13 'hit':8C 'jazz':12 'kay':5B 'oldies':14 'parade':9C,10C 'prerock':17 'rock':2A 'roll':3A 'starr':6B 'the':1A 'vocal':18 'waltz':4A 'your':7C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  7B
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', '50s', 'oldies', 'swing']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853343.682095  (2021-05-24 12:49:03)
                             'size'  7127045