Fret Nice is a platformer that makes use of the Guitar Hero peripheral and puts that unique device to different uses. It's both a platformer and a game in which you create music as you play. Fret Nice is still in development; the targeted platforms are XBLA, PSN, WiiWare, and PC. Check out the site and play the prototype.
In this interview GameTap speaks with Fret Nice creator Mårten Brüggemann, who leads a team of nine in Sweden.