Lady Gaga and Bruno Mars performed a hauntingly beautiful cover of "California Dreamin'" at the 2025 Grammy Awards

Just days before the Grammys, rumors began to swirl that Lady Gaga and Bruno Mars were tapped to perform at the ceremony last minute. But though the duo’s last collaboration, “Die with a Smile,” became a global smash hit — rising to the top spot on the Billboard Hot 100 last month — it seemed like its lyrical content might be out of place for a telecast dedicated to fundraising for Los Angeles wildfire relief.

Lady Gaga and Bruno Mars teamed up to offer an emotional tribute to those affected by the devastating L.A. wildfires with a duet of the Mamas and the Papas classic “California Dreamin'” at Sunday night’s Grammy Awards.