Today Google's home page is a guitar and it's is the most epic thing I've ever seen!
I was watching AVPM again and I was looking at the comments and I saw someone say to type eyiuypouyiuyue in the guitar (you can either 'pluck' the stings with your mouse or type random letters). Try it! If you don't want to, the link to the recording is below
Link to song: http://goo.gl/doodle/WR9O5