Imagine getting to karaoke Mariah Carey [1]'s greatest hits with THE Mariah Carey herself! MTV made the dreams of several Carey superfans come true when they had the singer stop by the "TRLevator" while celebrating the release of her new album, Caution. Not only did we get to see fans do their best Carey "Oooooh" to her saucy hit "GTFO" [2], but we also heard them sing along to some of her classic hits like "Always Be My Baby." We haven't seen Mariah sing along like this since her ride with James Corden on Carpool Karaoke [3]!

The video also contains highly memorable moments, like superfans screaming "Justice for Glitter!" — which somehow climbed to number one on the iTunes chart recently [4], FYI — as well as Carey pausing the sing-along to pose for a perfectly timed photo. Watch the video ahead and warm-up your vocals. You never know who'll be in the next lift!