“I had recorded the Foo Fighters at Sound City [Studios, the LA studio which has seen the likes of The Grateful Dead, Johnny Cash, Fleetwood Mac, and Bob Dylan record there],” he tells Rick Beato. I was an assistant a couple of times because Dave really loved Sound City, because he recorded there with Nirvana. The Nick Raskulinecz Interview: Crafting The Sounds Of Deftones, Foo Fighters, AIC and Rush - YouTube Watch On“He had built a basement studio, and coincidentally, I had just finished assistant engineering a record in a house. Making that record changed everything for me.”As for Grohl's guitar playing, Raskulinecz agrees with Beato in his conviction that he's “such a tight guitar player.” The producer even asserts that, “I had no idea how good of a guitar player he was when we started recording. I was just blown away at how good of a guitar player he was.