Check this out: 'Da Vinci' church reveals secret code - CNN.
Dan Brown's "The Da Vinci Code" pays homage to Rosslyn Chapel, an intricate and enigmatic Scottish church packed solid with centuries-old puzzles. Now, it seems, at least one of its mysteries is solved.
Code breaker and composer Thomas Mitchell, along with his composer son Stuart, have deciphered an archway sporting 13 angelic musicians and 213 geometric symbols. Turns out, the symbols are musical notes; specifically, they are Chladni patterns, the shapes that result when a sand-covered plate is vibrated by various tones. He and his son have recreated the corresponding medieval melody, dubbed The Roslynn Motet, and it will be performed in the chapel for the first time on May 18.
Mitchell has a website that explains all, including a snippet of the music and an awesome video of the sound patterns forming on the vibrating plate, matched with corresponding carvings.
Is this cool or what?