Foo Fighters main man Dave Grohl revealed in an interview at the Pollstar Live conference in Los Angeles why the band had to pull out of performing at the grand opening of the Fillmore New Orleans on February 15th and 16th. Grohl explained that he finally underwent a much needed surgery roughly a week ago on his left arm.

The singer. guitarist and drummer told host Michael Rapino of Live Nation, "This is something I’ve had to deal with for a long time and it’s not the end of the world but I did have to have surgery on my arm because I need it to pay the rent. I knew I had to fix my arm at some point and I went ahead and did it."

The Foos have nothing booked until the rescheduled New Orleans gigs in May, leading Grohl to joke, "It's funny having surgery because you actually get a little bit of rest. Right before they wheeled me in, the guys said ‘Hey, we’re going to give you something that’s going to make you feel really good’ and I thought I finally get to take a nap."

But Grohl added that playing live was the secret to his band's success, saying, "The excitement of seeing live music, of seeing people on stage, that will never go away. We don’t sell a 10th of the records that we sold 20 years ago, but we sell out f**king stadiums in a lot of places . . . You have to establish a base and be faithful to them."

Drummer Taylor Hawkins told us a while back that the Foos have actually been bigger in other parts of the world than America at times: "As a band, we've always actually been a little bit bigger outside of America. England, we do really well and Australia we do really well and a lot of parts of Europe we do well. And we do well in America, but mainly in the big cities, you know. We're not huge necessarily in the Midwest and places like that because, frankly, America's big."

Dave Grohl also had nothing but praise for teen singer/songwriter Billie Eilish during his Pollstar Live interview, saying. "My daughters are obsessed with Billie Eilish. The same thing is happening with her that happened with Nirvana in 1991. People say, ‘Is rock dead?’ When I look at someone like Billie Eilish, rock and roll is not close to dead!"