Discussing the potential for taking the Sonic Highways TV show to other countries, the chat turned to Brazil, where Grohl's fellow guest, Fast & Furious actress Jordana Brewster, lived as a child.

Grohl says: "You know what's crazy? One of my favorite heavy metal bands of all time is from Brazil. This band called Sepultura. I mean, Sepultura, they're amazing, but one of the crazy things they did, they made this album called 'Roots'.