"Bruno and I have a lot of mutual respect for each other and were talking about collaborating," Gaga previously said in a statement of how the song came to be. "I was finishing up my own album in Malibu and one night after a long day he asked me to come to his studio to hear something he was working on."

Lady Gaga is kicking the new year off on a high note—and she unveiled a serious style switch up for an upcoming project. The 38-year-old pop star took to Instagram on Monday, Jan. 7, to share a video celebrating a major milestone: Her song with Bruno Mars, "Die With a Smile," hit No. 1 on the Billboard Hot 100 list.