======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '124'
                                          'artist'  'Ritchie Valens'
                                     'text_people'  'Traditional'
                                         'release'  'The Best of Ritchie Valens'
                                           'title'  'La Bamba'
                                           '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '102.230'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-156 POS 22'
'COMM:ID3v1 Comment:XXX'                            '59-156 POS 22'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x000\x00+\x009\x006\x00+\x002\x005\x000\x00F\x00+\x004\x004\x006\x003\x00+\x006\x00B\x003\x005\x00+\x008\x00B\x001\x000\x00+\x00B\x006\x00D\x00A\x00+\x00D\x00F\x004\x000\x00+\x001\x001\x004\x007\x002\x00+\x001\x003\x00B\x008\x009\x00+\x001\x005\x00F\x00B\x00F\x00+\x001\x008\x009\x00E\x000\x00+\x001\x00A\x00C\x004\x005\x00+\x001\x00C\x00E\x002\x00D\x00+\x001\x00E\x00E\x00B\x005\x00+\x002\x000\x00E\x004\x00F\x00+\x002\x003\x007\x003\x005\x00+\x002\x005\x00B\x00A\x004\x00\x00\x00')
'PRIV:AverageLevel:\x8c\x11\x00\x00'                PRIV(owner='AverageLevel', data=b'\x8c\x11\x00\x00')
'PRIV:PeakValue:m^\x00\x00'                         PRIV(owner='PeakValue', data=b'm^\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 \x002\x000\x009\x004\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x003\x003\x007\x009\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x001\x005\x007\x003\x004\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x002\x000\x009\x004\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x003\x003\x007\x009\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x003\x001\x005\x007\x003\x004\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x96eg©å³RE»ÕÛÙ]±\x1bG'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x96eg\xa9\xe5\xb3RE\xbb\xd5\xdb\xd9]\xb1\x1bG')
'PRIV:WM/WMCollectionID:\x96eg©å³RE»ÕÛÙ]±\x1bG'     PRIV(owner='WM/WMCollectionID', data=b'\x96eg\xa9\xe5\xb3RE\xbb\xd5\xdb\xd9]\xb1\x1bG')
'PRIV:WM/WMContentID:\x92èå\x9dC(XO\x98\x82Ö¡Ð\x02C\x82'  PRIV(owner='WM/WMContentID', data=b'\x92\xe8\xe5\x9dC(XO\x98\x82\xd6\xa1\xd0\x02C\x82')
'TALB' (Album/Movie/Show title)                     'The Best of Ritchie Valens'
'TBPM' (BPM (beats per minute))                     '102.230'
'TCOM' (Composer)                                   'Traditional'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'La Bamba'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '124493'
'TPE1' (Lead performer(s)/Soloist(s))               'Ritchie Valens'
'TPE2' (Band/orchestra/accompaniment)               'Ritchie Valens'
'TPUB' (Publisher)                                  'Rhino'
'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'                                   ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.520393'

========================== row from database ==========================
                                              'id'  1434007
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-156 - Ritchie Valens - La Bamba.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  124
                                           'genre'  prerock-unsorted
                                        'filesize'  4980615
                                           'mtime'  1621698400
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 156 prerock unsorted
                                      'tag_artist'  Ritchie Valens
                                     'tag_release'  The Best of Ritchie Valens
                                       'tag_title'  La Bamba
                                             'bpm'  102.23
                                    'search_title'  'bamba':2 'la':1
                                   'search_artist'  'ritchie':1 'valens':2
                                  'search_release'  'best':2 'of':3 'ritchie':4 'the':1 'valens':5
                                     'search_rest'  '00oldiepop':5 '156':8 '1959':6 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':14 '156':17 '1959':15 '59':16 'bamba':2A 'best':6C 'country':13 'exotica':11 'jazz':10 'la':1A 'of':7C 'oldies':12 'prerock':18 'ritchie':3B,8C 'the':5C 'unsorted':19 'valens':4B,9C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698399.8945858  (2021-05-22 17:46:39)
                             'size'  4980615