Pearl Jam brought out Bradley Cooper for a surprise performance of “Maybe It’s Time” from A Star Is Born during the band’s headlining performance at BottleRock Napa Valley 2024.

The 49-year-old actor, who portrayed grizzled rocker Jackson Maine alongside Lady Gaga in the 2018 film, joined Pearl Jam frontman Eddie Vedder for an acoustic rendition of the Jason Isbell-written song at the California music festival on Saturday (May 26).

Vedder previously covered “Maybe It’s Time” — which reached No. 93 on the Billboard Hot 100 chart in 2018 — during a solo performance the Innings Festival in Tempe, Ariz., in 2019.

Later in Pearl Jam’s BottleRock set, Cooper joined the group again for their cover of Neil Young’s “Rockin’ in the Free World.”

Leading up to his role in A Star Born, Cooper spent some time with Vedder to learn the ropes of the rock star lifestyle.

“I went up to Seattle and spent four or five days with him and I asked him 9,000 questions,” Cooper told Yahoo! Entertainment. “And he gave me minor, little things that only musicians know about what to do, just aesthetically and the inner workings.”

During an interview with Howard Stern in 2020, Vedder revealed the main piece of advice he gave to Cooper. “We just hung out for a couple of days, and he just asked me a few questions and I told him things like, you know, ‘Make sure your guitar covers your balls at all times,’” the artist said.

Upon the film’s release, Cooper received overwhelming praise for his gritty homage to Kris Kristofferson’s version of the male lead in the 1976 remake of the 1937 original. Cooper and Gaga won a best original song Oscar for their duet of “Shallow” at the 91st Academy Awards in 2019. The song also peaked at No. 1 on the Hot 100 that same year.

Watch Cooper join Pearl Jam at BottleRock 2024 here.