Sonisphere Festival have confirmed Queen (with Adam Lambert), Faith No More, and KISS as the headliners for the UK leg of their European festival franchise. In addition to these three main stage headliners, Sonisphere have confirmed an additional twenty other acts for their 2012 UK incarnation, bringing the total of bands announced for Knebworth this summer up to 23.
Switchfoot

Switchfoot is a Grammy-winning alternative rock band from San Diego, California, United States. The band was formed in 1996 with the brothers Jon Foreman (lead singer/guitarist) and Tim Foreman (bass). Long-time friend Chad Butler (drums) joined soon after. Eventually the band evolved to what it is today with the addition of members Jerome Fontamillas (key/guitar/electronics - formerly of Mortal and Fold Zandura) and Drew Shirley (guitar - formerly of All Together Separate). Read more on Last.fm