“John's got this toolkit of unwritten rock riffs. I wouldn't say that he’s out and out, AC/DC rock – but he could easily do it”: How John Mayer, Ed Sheeran and Dave Grohl channeled Eddie Van Halen on the F1 soundtrack

John Mayer, Dave Grohl, and Ed Sheeran formed a perhaps unlikely triumvirate when they collaborated on the song Drive, featured in Brad Pitt's racing movie, F1.

Now, Mayer and Sheeran – together with all-star producer Blake Slatkin – are taking fans (and songwriting aficionados) behind the scenes on how the collaboration came about – and what exactly went down in the studio.