Foo Fighters frontman Dave Grohl delivered the keynote speech at SXSW 2013 earlier today (March 14), covering a wide range of topics during his hour-long chat, including Nirvana, his ‘Sound City’ documentary and his surprising love for the Psy YouTube hit ‘Gangnam Style.’

Throughout the informative chat, Grohl showcased his quirky yet charming personality. “I hope I still look like a rock star,” he said at the outset, joking about his reliance on glasses. When talking about the Foo Fighters, he offered more self-depreciating humor.

"Finding a good band name is still the hardest f---ing part," he said. "Foo Fighters is the stupidest f–ing name."

Then came this shocking confession: "I can truthfully say out loud that 'Gangnam Style' is one of my favorite songs of the past decade."

The Psy superfan also shed some light on his musical history, including Nirvana’s rise to stardom. When Kurt Cobain declared, “We wanna be the biggest band in the world,” Grohl admitted, his first response was to laugh at the idea.

“I thought he was f---ing kidding,” he said. “How Kurt even thought we could make a ripple in this mainstream world of polished pop music was beyond me."

Little did he know that Nirvana would go on to sell more than 300,000 copies of their debut record a week, and "that ripple that had been so unimaginable had become a tidal wave.”

Following Kobain's death, Grohl told the audience, he was "lost" and "numb."

"The music I had devoted my life to had now betrayed me," Grohl said. "I turned off the radio. I put away my drums."

Thankfully, he didn’t leave the music scene for good. In fact, he’s set to perform with the Sound City Players -- the all-star band he's assembled in connection with his film -- tonight at Stubb’s.

Watch Dave Grohl’s SXSW 2013 Keynote Address