According to Discovery:
A real da Vinci code is indeed hidden within Leonardo's "The Last Supper"... But rather than conspiracy theories, the new code points to a hidden musical score...
Indeed, Leonardo was an accomplished lyre player who also enjoyed hiding puzzles in his work.
Pala, who will publish his findings next week in the book "La Musica Celata" (which translates to "The Hidden Music") claims to have discovered nothing less than a sacred hymn and text, along with mystic symbols in da Vinci's degraded masterpiece.