On Thursday night, Bruno Mars was the first performer at the Intuit Dome arena in Inglewood, California — LA’s newest venue and the home of the Clippers. The elusive musician is playing two nights, and the first was one for the books. He slid through all the hits and invited a very special guest onstage in front of all the fans and celebrities in attendance.

Below, we’re breaking down our favorite moments from the night. Mars and Lady Gaga had been teasing their brand-new collaboration “Die with a Smile” all day, so of course it was the perfect time to live-debut the country collab. He surprised the crowd with the icon toward the end of the show and started by thanking her for having him on the song.

Their voices blended perfectly, and the song sounded so good it felt like we were already listening to a classic. Gaga wasn’t the only musician there: Intuit Dome was packed with celebrities. We talked to Meghan Trainor on the red carpet, who said her family’s favorite Bruno track is “24K Magic”.

Inside the club suites, we ran into Halle Bailey and DDG and their adorable baby. The coolest celeb moment of the night was catching Jennifer Lopez with her hands up and whipping her hair to Mars’ “Marry You”. You better live, J.

Lo! A post shared by TETRIS (@itstetrisbish) Mars is a once-in-a-lifetime performer, and his skills were on full display during the show. He effortlessly executed high-energy choreography along with his band on songs like “Finesse.” Yo.