Dave Grohl is back in a Foo groove.

The singer-guitarist and the Los Angeles Philharmonic delivered orchestral renditions of Foo Fighters faves “Everlong” and “The Sky Is a Neighborhood” at Coachella on Saturday.

The surprise appearance — also with Venezuelan maestro Gustavo Dudamel at the Outdoor Theatre at the Indio, California, festival — was the first time the 56-year-old rocker returned to his Foo frontman role since The Post exclusively confirmed the mother of his love child’s identity as Jennifer Young.

Grohl made his first musical appearance since the baby scandal at FireAid in January, playing a Nirvana set with fellow surviving members Krist Novoselic and Pat Smear. The trio was also joined by Post Malone for “SNL50: The Homecoming Concert” in February.

But Grohl hadn’t performed any Foo Fighters songs live since making the shocking announcement about his cheating and having a newborn.

“I’ve recently become the father of a new baby daughter, born outside of my marriage,” Grohl wrote in an Instagram post in September. “I plan to be a loving and supportive parent to her.

“I love my wife and my children, and I am doing everything I can to regain their trust and earn their forgiveness,” continued Grohl, who has three other children with wife Jordyn Blum. “We’re grateful for your consideration toward all the children involved, as we move forward together.”

In February, The Post broke the news that Young — a Florida-born rock ‘n’ roll fan who now resides in Los Angeles — is the mother of Grohl’s new daughter. And records obtained by The Post showed that their nearly 9-month-old child — who Young is raising in a modest house with her own mother — has Grohl’s last name.

Grohl wasn’t the only surprise guest to join Dudamel and the LA Phil at Coachella: Cynthia Erivo also took the stage to sing “Brick by Brick,” a ballad from her forthcoming album “I Forgive You,” and a cover of Prince’s “Purple Rain.”

“Hello Coachella, nice to see you. Would you like a little Prince?” she asked the crowd, who erupted in cheers. “OK, Prince for you then.”

Other guest performers included Natasha Bedingfield, who sang her hit “Unwritten”; Laufey; and Argentine duo Ca7riel & Paco Amoroso.

Coachella 2025 came to a close Sunday night with surprise guests Ed Sheeran and Jelly Roll joining headliner Post Malone.