Foo Fighters pleased fans this month when they announced their new studio album Concrete and Gold will be out in September.

Dave Grohl appeared on BBC Radio 1 where he revealed to Annie Mac that the band aimed to make an album that sounds like “Motorhead doing Sgt. Pepper”, before claiming that “the biggest pop star in the world and — I’m not kidding — sings backup on one of the heaviest songs on the record, and we’re not telling anybody who it is.”

The most obvious guess would be Adele, considering Greg Kurstin produced her massive hit ‘Hello’, as well as the new Foo Fighters album. It could be anyone though: Miley, Taylor, Madonna, Bieber. Tiffany? Ringo? That New Radicals guy?

Listen to the interview below.

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