What technology is used at the Google homepage (guitarstrings)

Question

What technology is used at the Google homepage (9 June 2011)? They made something like a guitar pickup for the snares. When you move the mouse over it, the snares are being

Answer 1

http://googleblog.blogspot.com/2011/06/doodle-for-instrumental-inventor.html

"If you’re curious, the doodle was made with a combination of JavaScript, HTML5 Canvas (used in modern browsers to draw the guitar strings), CSS, Flash (for sound) and tools like the Google Font API, goo.gl and App Engine."