Lady Gaga and Bruno Mars threw it back to the '60s for their performance at the 2025 Grammys, singing The Mamas and the Papas' iconic hit "California Dreamin" midway through the ceremony at Crypto.com Arena Sunday (Feb.

Lady Gaga and Bruno Mars took a nostalgic trip to pay tribute to Los Angeles. The pair performed a cover of The Mamas & The Papas’ ‘California Dreamin’ as they took the stage at the Crypto.com Arena for a special duet at the 67th Grammy Awards in honor of those impacted by the recent wildfires.

Of course, this isn't the first time Lady Gaga and Bruno Mars have collaborated. Their surprise duet "Die With a Smile" continues to be one of the biggest radio and streaming hits out today since it's initial release last year.