Foo Fighters mainman Dave Grohl briefly addressed the progress band's been making on their new studio effort, confirming unpredictable approach and "bada-s" vibe. Chatting with Rolling Stone at the American Music Awards, Grohl commented: "It's badass. We're doing something that nobody knows about, it's f--king rad. We begin recording soon, but we're doing it in a way that no one's done before and we're writing the album in a way that I don't think has been done before." Dave also discussed producing the Zac Brown Band, calling the group "unbelievable" and praising their natural raw sound. "The funny thing is that I met Zac Brown at a clothing store before the last Grammys and we swapped numbers," Grohl kicked off. "A couple of weeks later he asked me if I would produce the next record. I'd never heard him before and I said, 'Yes.' Then a couple of weeks later he said, Will you play with me on the Country Music Awards?' "And I'd still never heard him and I said, 'Yes,'" the musician continued. "So the first time I ever heard Zac was when I hit record in Nashville and said, 'Okay, we're rolling.' I'd never heard one note of his music. They're unbelievable. The band is so good they can be tracked live, we didn't f--k with computers, we tracked live, four-part harmonies around one microphone." As the Foos' latest studio effort, "Wasting Light" was released in April 2011 via RCA Records.