Rie Takahashi and Jeffrey Miller of UCLA have a project called gene2music, where they translate human genetic code into music!
I won't go into the amino acid to musical note assignment - you can read it at the website or just listen to the examples.
This one above, by the way, is the "musical" aspect of Huntingtin [wiki], the protein associated with Huntington's Disease. I worked on Huntingtin briefly during my grad school years oh-so-long-ago.
Link - via Discovery Channel