A guy called Toni Westbrook has made a game for the C64 called "Shredz64" that is basically a Guitar Hero, but takes advantage of SID files that are available on the internet. Here are some links

Youtube (See it in action)
http://www.youtube.com/watch?v=WyCMM6e1Lbo (Part 1)
http://www.youtube.com/watch?v=52gcC3Sn-Gw (Part 2)

Toni Westbrook's website
http://www.toniwestbrook.com/shredz64 (Shredz64)


This game absolutely stunned me, I didn't think it would be as good as it is, but it doesn't exactly have your common Black Sabbath, Aerosmith, and all those rock songs, but it does have Zelda...