======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '153'
                                          'artist'  'Della Reese'
                                     'text_people'  'Bobby Worth'
                                         'release'  "Nipper's Greatest Hits: The 50's, Vol. 2"
                                           'title'  "Don't You Know"
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'soul', 'gospel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '140.725'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-025 POS 2'
'COMM:ID3v1 Comment:XXX'                            '59-025 POS 2'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x003\x002\x00A\x00F\x00+\x005\x00C\x004\x009\x00+\x008\x00B\x00B\x00F\x00+\x00C\x00B\x009\x00D\x00+\x00F\x00C\x007\x00B\x00+\x001\x003\x009\x002\x00A\x00+\x001\x007\x000\x006\x00D\x00+\x001\x00A\x002\x00A\x007\x00+\x001\x00C\x00C\x008\x00C\x00+\x001\x00F\x00F\x00D\x001\x00+\x002\x002\x004\x007\x002\x00+\x002\x005\x008\x001\x006\x00+\x002\x008\x00E\x005\x008\x00+\x002\x00C\x000\x00D\x00D\x00+\x002\x00E\x00A\x007\x00C\x00+\x003\x001\x002\x005\x001\x00+\x003\x004\x000\x005\x003\x00+\x003\x006\x00E\x00E\x00A\x00+\x003\x009\x00B\x00F\x00E\x00+\x003\x00E\x00A\x007\x00D\x00\x00\x00')
'PRIV:AverageLevel:=\x0f\x00\x00'                   PRIV(owner='AverageLevel', data=b'=\x0f\x00\x00')
'PRIV:PeakValue:\x90Q\x00\x00'                      PRIV(owner='PeakValue', data=b'\x90Q\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 \x00 \x005\x006\x001\x002\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x009\x002\x002\x006\x000\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x005\x006\x001\x002\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x009\x002\x002\x006\x000\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x04\x1aâwÝa\x12N´\x1cá\x9bfÓ¢K'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x04\x1a\xe2w\xdda\x12N\xb4\x1c\xe1\x9bf\xd3\xa2K')
'PRIV:WM/WMCollectionID:\x04\x1aâwÝa\x12N´\x1cá\x9bfÓ¢K'  PRIV(owner='WM/WMCollectionID', data=b'\x04\x1a\xe2w\xdda\x12N\xb4\x1c\xe1\x9bf\xd3\xa2K')
'PRIV:WM/WMContentID:²Êñ\x90§xÇH\x9e\x84ÑÔ´¦µ~'     PRIV(owner='WM/WMContentID', data=b'\xb2\xca\xf1\x90\xa7x\xc7H\x9e\x84\xd1\xd4\xb4\xa6\xb5~')
'TALB' (Album/Movie/Show title)                     "Nipper's Greatest Hits: The 50's, Vol. 2"
'TBPM' (BPM (beats per minute))                     '140.725'
'TCOM' (Composer)                                   'Bobby Worth'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "Don't You Know"
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '153866'
'TPE1' (Lead performer(s)/Soloist(s))               'Della Reese'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '19'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'female vocalists', 'soul', 'gospel']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.452753'

========================== row from database ==========================
                                              'id'  1514585
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-025 - Della Reese - Don_t You Know.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  153
                                           'genre'  prerock-unsorted
                                        'filesize'  6157617
                                           'mtime'  1620387781
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 025 Don_t prerock unsorted
                                      'tag_artist'  Della Reese
                                     'tag_release'  Nipper's Greatest Hits: The 50's, Vol. 2
                                       'tag_title'  Don't You Know
                                             'bpm'  140.725
                                    'search_title'  'don':1 'dont':3 'know':5 't':2 'you':4
                                   'search_artist'  'della':1 'reese':2
                                  'search_release'  '2':13 '50':8 '50s':10 'greatest':4 'hits':5,6 'nipper':1 'nippers':3 's':2,9 'the':7 'vol':11,12
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'don':8 'exotica':2 'jazz':1 'oldies':3 'prerock':10 't':9 'unsorted':11
                                    'search_combo'  '00oldiepop':25 '1959':26 '2':20C '50':15C '50s':17C '59':27 'country':24 'della':6B 'don':1A,28 'dont':3A 'exotica':22 'greatest':11C 'hits':12C,13C 'jazz':21 'know':5A 'nipper':8C 'nippers':10C 'oldies':23 'prerock':30 'reese':7B 's':9C,16C 't':2A,29 'the':14C 'unsorted':31 'vol':18C,19C 'you':4A
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'soul', 'gospel']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387781.1386018  (2021-05-07 13:43:01)
                             'size'  6157617