Dave Grohl is very familiar with landing No. 1 hits on the album and singles charts. But this week the Foo Fighters singer/guitarist is celebrating a very different chart-topper. The gregarious rocker’s memoir of his years as a striving, then world-beating musician, The Storyteller: Tales of Life and Music, debuted at the top of the New York Times bestseller list and Grohl could not be more excited.

“Never in my wildest dreams did I ever imagine that I would someday be a number one bestselling author, but it’s those same wildest dreams that I’ve followed since the day I picked up a guitar. Honored,” Grohl wrote on Instagram. “Huge thanks to everyone at @deystreet for making my first book such an amazing experience.”

The book currently sits atop the Times’ “combined print & e-book nonfiction list,” besting the latest damning Trump White House memoir and pushing down veteran Washington Post journalist Bob Woodward’s third Trump dissection, Peril, as well as Stanley Tucci’s new food memoir, Taste.

Grohl has been on a grinding promo tour for the book, which has included stops by Howard Stern’s SiriusXM radio show, Apple TV’s The Morning Show, and live readings where he’s busted out some solo sets. The book takes readers on the improbable journey Grohl went on as the son of a single schoolteacher mom growing up in Virginia to joining his favorite hardcore band, Scream, at 17 and the phone call audition he passed to join Nirvana, as well as his friendships and collaborations with such musical heroes as Paul McCartney, Iggy Pop and Joan Jett.

Check out Grohl’s post below.