Dave Grohl has done nearly everything a rocker can do. He helped changed the face of the music industry with Nirvana, has sold millions of records, played stadiums, won Grammys donated his time and money to causes that are important to him, branched out into filmmaking and has made friends with everyone from Paul McCartney to Lemmy. But if you were to ask him, his greatest achievement was the time a Foo Fighters concert set off a seismograph.

He was telling the New Zealand Herald about some of the "crazy shows" he's had in that country and recalled a 2011 date in Western Springs. "We played at some speedway outside of town and the audience was jumping around so much that it triggered the seismograph," he said "We have that seismograph readout of the show on the wall in the studio. I'm probably more proud of that, then anything we've ever done."

"Triggered an earthquake," he continued in a voice that the reporter described as "cartoonishly self-satisfied."

Grohl also spoke a bit more about how the political climate in the U.S. helped influence the lyrics in Concrete and Gold, which came out today. "All the lyrics were written in a short period of time and there was a lot of heavy things going on in America and around the world," he said. "It's inevitable somehow those things influence whatever you're writing. If you're living under a dark cloud it's gonna influence you to write about that, or to find hope. The album winds back and forth throughout a lot of that stuff. I wouldn't call it a political record but everything that's going on in the world, especially at home in the States, it weighs on you."

Foo Fighters Albums Ranked in Order of Awesomeness

More From Diffuser.fm