But he returned to action last week in a Game Of Thrones-themed chair, designed while he was under the influence of prescription drugs. Grohl tells Entertainment Weekly: "What seemed like a setback at the time has turned into the beautiful blessing in disguise.

"This throne, these crutches and these audiences make us play longer and harder than we ever have. It's this whole new energy in the show." He says of his stage prop: "The idea is just f***ing ridiculous, especially for a band that's never relied on any kind of production at all.