Crystal Castles, Blush and Traktorkestar help complete the OpenAir St.Gallen 2011 line-up, which will take place at Sittertobel, Switzerland from 30 June to 3 July.
Linkin Park, Queens Of The Stone Age, The National, Hurts and Dizzee Rascal are among those already signed up to perform.
Janelle Monae, Warpaint and The Vaccines will also appear alongside Lissie, Boys Noize and many more.
Open Air St. Gallen will run from 30 June to 3 July.
Tickets are on sale now, with a four-day ticket priced at 193CHF.