But the reality is often subtler than that—career-wise, each superstar needed something from the other. Often, one act is a bit thirstier than the other. When you encounter one of these mega-duets, you should ask yourself, Who needed this more?

This week's Five Burning Questions looks at the first new No. 1 of 2025, with a song that's been in the top 10 for months already.

Lady Gaga and Bruno Mars' "Die With a Smile" secured a third consecutive week at No. 1 on the Billboard Hot 100 songs chart dated Jan. 25, 2025, and Mars is ready to party. "THANK YOU ALL!" he wrote alongside a cheers emoji and a screenshot of this week's top 10 on the chart.

Lady Gaga and Bruno Mars ’ “Die With a Smile” notches a second week at No. 1 on the Billboard Hot 100. A week earlier, the ballad about flashing pearly whites just before reaching the pearly gates became Gaga’s sixth Hot 100 leader and Mars’ ninth.

Lady Gaga and Bruno Mars’ “Die With a Smile” scores its third consecutive week at No. 1 on the Billboard Hot 100 singles chart. This marks Gaga’s second longest chart-topping reign of her career, tying the three-week run at No.

Bruno Mars is ready to make a hit song with Sexyy Red. Mars, known for his epic collaborations, hopped on Instagram to celebrate his track with Lady Gaga, "Die With A Smile," topping the Hot 100 for the third week.