The Blue Balls Festival is an annual music festival held in Lucerne, Switzerland. It has featured many famous musicians within the last few years, including KT Tunstall, Jonny Lang, UB40, Van Morrison, Jeff Healey, Jimmy Cliff, Bobby McFerrin, Billy Idol, Tracy Chapman, Joey DeGraw, Jethro Tull, BB King, Gianna Nannini, Bonnie Raitt, Melanie Fiona,[1] among many others.