"I'm so honored to have a small part in your giant musical legacy," Bruno Mars told Lady Gaga upon accepting the award for best pop duo/group performanceLady Gaga and Bruno Mars won the Grammy Award for best pop duo/group performance with "Die with a Smile.

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.