Speaking to the U.K's BBC Radio 1, Grohl confirmed that the band are working on their eighth album, but said, "We haven't really disclosed exactly what we are doing."

Commenting on the suggestion that the band are recording with previously unused recording techniques with producers Butch Vig and Steve Albini, Grohl said: "I know what it sounds like and I honestly think the entire concept is really going to take people by surprise and it sounds nuts.