Uh, pretty much my entire music library? But let's go with... Well, I've represented Groovelily and Jason Robert Brown twice already. So let's go with some Jonathan Coulton. Specifically, "Blue Sunny Day," because who doesn't love songs about suicidal vampires? This is one of CaptainValor's awesome YouTube videos where he does sign language to a lot of great songs... including LOTS of JoCo ones!