© Mario Guzmán/epa/Corbis
Weezer head the latest additions to this year's Sonisphere line-up. Take a look below to see who else has joined the Knebworth rockathon.
Pat Wilson, Josh Freese and co have been added to the bill alongside Aussie rockers Airbourne and Architects.
Also added are Lars Ulrich-approved retro metallers Diamond Head. Unsurprisingly, they will line-up with Metallica and co on the Friday.