======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '152'
                                          'artist'  'Sonny James'
                                     'text_people'  ''
                                         'release'  'Classic Country: 1950-1959 [2 CD] Disc 1'
                                           'title'  'Young Love'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic country', 'male vocalists', 'oldies', 'country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '017'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '97.506'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:î\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xee\x10\x00\x00')
'PRIV:PeakValue:Ns\x00\x00'                         PRIV(owner='PeakValue', data=b'Ns\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 \x006\x003\x004\x007\x006\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x001\x002\x002\x006\x007\x003\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x003\x004\x007\x006\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x001\x002\x002\x006\x007\x003\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x02\x81âÄa¹5K°ì\x97½d{î\x07'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x02\x81\xe2\xc4a\xb95K\xb0\xec\x97\xbdd{\xee\x07')
'PRIV:WM/WMCollectionID:\x02\x81âÄa¹5K°ì\x97½d{î\x07'  PRIV(owner='WM/WMCollectionID', data=b'\x02\x81\xe2\xc4a\xb95K\xb0\xec\x97\xbdd{\xee\x07')
'PRIV:WM/WMContentID:XÔ\x1b\x82q°rD²{\x06[¨6\x1f»'  PRIV(owner='WM/WMContentID', data=b'X\xd4\x1b\x82q\xb0rD\xb2{\x06[\xa86\x1f\xbb')
'TALB' (Album/Movie/Show title)                     'Classic Country: 1950-1959 [2 CD] Disc 1'
'TBPM' (BPM (beats per minute))                     '97.506'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Young Love'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '152266'
'TPE1' (Lead performer(s)/Soloist(s))               'Sonny James'
'TPUB' (Publisher)                                  'Time Life'
'TRCK' (Track number/Position in set)               '017'
'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'                                   ['classic country', 'male vocalists', 'oldies', 'country']
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.22 dB'
'TXXX:replaygain_track_peak'                        '0.450197'

========================== row from database ==========================
                                              'id'  1451525
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-017 - Sonny James - Young Love.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  152
                                           'genre'  prerock-unsorted
                                        'filesize'  6092408
                                           'mtime'  1621698307
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 017 prerock unsorted
                                      'tag_artist'  Sonny James
                                     'tag_release'  Classic Country: 1950-1959 [2 CD] Disc 1
                                       'tag_title'  Young Love
                                             'bpm'  97.506
                                    'search_title'  'love':2 'young':1
                                   'search_artist'  'james':2 'sonny':1
                                  'search_release'  '1':12 '1950':4 '19501959':6 '1959':5 '2':7,8 'cd':9,10 'classic':1 'country':2,3 'disc':11
                                     'search_rest'  '00oldiepop':5 '1957':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':21 '1':16C '1950':8C '19501959':10C '1957':22 '1959':9C '2':11C,12C 'cd':13C,14C 'classic':5C 'country':6C,7C,20 'disc':15C 'exotica':18 'james':4B 'jazz':17 'love':2A 'oldies':19 'prerock':23 'sonny':3B 'unsorted':24 'young':1A
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  10B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['classic country', 'male vocalists', 'oldies', 'country']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698307.4134886  (2021-05-22 17:45:07)
                             'size'  6092408