Lady Gaga and Bruno Mars are quickly becoming our favorite musical duo. During the 67th Annual Grammy Awards, the two superstars performed a gorgeous cover of The Mamas & the Papa’s “California Dreamin’” onstage.

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.