"I haven't been on stage in like two years. I had no idea I was going to be on the stage tonight," Bieber said to the crowd of screaming fans as he wrapped his performance of his hit song "Sorry."
"I had to get my grove back," he added before announcing he has an "album coming soon!"
While *NSYNC, Diddy and Nicki Minaj turned out to perform alongside Grande last week, the boy band confirmed to fans that they wouldn't be coming back for week 2, and there wasn't any real surprises on that front.
But that didn't keep Ariana from slaying in her return.
During the first act of her set -- which began with her incredible "Last Supper" stage set visual as she kicked things off with "God Is a Woman" -- Grande mostly repeated her set list from the first time around, including her performances of "Side to Side" and "Bang Bang," this time without help from Minaj.
Grande, instead, performed over Minaj's pre-recorded vocals and kept the energy elevated by absolutely owning the stage and basking in the cheers of her devoted fans.
She wrapped the performance with fan favorites "No Tears Left to Cry" and "Thank U, Next."
For more on *NSYNC's surprise appearance during the first weekend of Coachella, and how Grande made it all happen, check out the video below.