======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '158'
                                          'artist'  'Dion & the Belmonts'
                                     'text_people'  'Doc Pomus/Mort Shuman'
                                         'release'  'Their Best'
                                           'title'  'A Teenager In 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-4', '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'  "['rockabilly', 'doo wop', '60s', '50s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '145.685'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-049 POS 5'
'COMM:ID3v1 Comment:XXX'                            '59-049 POS 5'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x002\x00F\x000\x00A\x00+\x005\x008\x00D\x009\x00+\x008\x006\x00D\x005\x00+\x00B\x005\x006\x00A\x00+\x00E\x002\x004\x00F\x00+\x001\x001\x000\x008\x002\x00+\x001\x003\x009\x008\x00B\x00+\x001\x005\x00E\x002\x00F\x00+\x001\x008\x00F\x00B\x002\x00+\x001\x00B\x00A\x002\x00D\x00+\x001\x00E\x005\x00D\x009\x00+\x002\x001\x004\x008\x00C\x00+\x002\x004\x003\x000\x008\x00+\x002\x006\x00C\x004\x00B\x00+\x002\x009\x004\x003\x00C\x00+\x002\x00C\x005\x003\x003\x00+\x002\x00E\x00C\x009\x00A\x00+\x003\x001\x004\x007\x007\x00+\x003\x004\x000\x00F\x005\x00+\x003\x006\x00B\x00F\x00A\x00\x00\x00')
'PRIV:AverageLevel:ë\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xeb\x0e\x00\x00')
'PRIV:PeakValue:¸o\x00\x00'                         PRIV(owner='PeakValue', data=b'\xb8o\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 \x00 \x005\x008\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x001\x000\x000\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x000\x008\x007\x000\x007\x005\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x00 \x005\x008\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x001\x000\x000\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x000\x008\x007\x000\x007\x005\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\r\x9fJ\r¢´ÿA\x96ä¥\x05´\x02{\t'  PRIV(owner='WM/WMCollectionGroupID', data=b'\r\x9fJ\r\xa2\xb4\xffA\x96\xe4\xa5\x05\xb4\x02{\t')
'PRIV:WM/WMCollectionID:\r\x9fJ\r¢´ÿA\x96ä¥\x05´\x02{\t'  PRIV(owner='WM/WMCollectionID', data=b'\r\x9fJ\r\xa2\xb4\xffA\x96\xe4\xa5\x05\xb4\x02{\t')
'PRIV:WM/WMContentID:«\x92H-Ľ\x99O\x8e\x06\x08àdûÆ¥'  PRIV(owner='WM/WMContentID', data=b'\xab\x92H-\xc4\xbd\x99O\x8e\x06\x08\xe0d\xfb\xc6\xa5')
'TALB' (Album/Movie/Show title)                     'Their Best'
'TBPM' (BPM (beats per minute))                     '145.685'
'TCOM' (Composer)                                   'Doc Pomus/Mort Shuman'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'A Teenager In Love'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '158560'
'TPE1' (Lead performer(s)/Soloist(s))               'Dion & The Belmonts'
'TPE2' (Band/orchestra/accompaniment)               'Dion & the Belmonts'
'TPUB' (Publisher)                                  'Laurie'
'TRCK' (Track number/Position in set)               '1'
'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'                                   ['rockabilly', 'doo wop', '60s', '50s', 'oldies']
'TXXX:q-bass'                                       '4'
'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'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.615571'

========================== row from database ==========================
                                              'id'  1440038
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-049 - Dion & The Belmonts - A Teenager In Love.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  158
                                           'genre'  prerock-unsorted
                                        'filesize'  6349914
                                           'mtime'  1621698395
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 049 prerock unsorted
                                      'tag_artist'  Dion & the Belmonts
                                     'tag_release'  Their Best
                                       'tag_title'  A Teenager In Love
                                             'bpm'  145.685
                                    'search_title'  'a':1 'in':3 'love':4 'teenager':2
                                   'search_artist'  'belmonts':3 'dion':1 'the':2
                                  'search_release'  'best':2 'their':1
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':14 '1959':15 '59':16 'a':1A 'belmonts':7B 'best':9C 'country':13 'dion':5B 'exotica':11 'in':3A 'jazz':10 'love':4A 'oldies':12 'prerock':17 'teenager':2A 'the':6B 'their':8C 'unsorted':18
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           '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-4', 'q-grit-1']
                                      'lastfmtags'  ['rockabilly', 'doo wop', '60s', '50s', 'oldies']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698394.680028  (2021-05-22 17:46:34)
                             'size'  6349914