Oh, Dave Grohl. Dave, Dave, Dave. I thought you were a pretty smart guy. So why did you have to pick a fight with Taylor Swift? By accusing her of using backing tracks?. Many acts, including Madonna, Kiss, Aerosmith and Mötley Crüe, have been attacked for their use of musical “supplements” to enhance the sound of their live shows. Grohl’s band, the Foo Fighters, was playing in London last weekend, and so was Taylor Swift. Fan-shot video shows Grohl making a clumsy comparison between the two tours, closing with, “That’s because we actually play live. What? Just saying. You guys like raw, live rock and roll music, right? You came to the right fucking place.”