Shaq covering Kelly Clarkson’s “Since U Been Gone” is the greatest thing you’ll hear all day!

Kelly Clarkson’s “Since U Been Gone” is an almost impossible song to sing and very few do it well. Sure, the beginning is pretty low and easy… but then comes the chorus and all hell breaks loose! Recently Jimmy Fallon teamed up with Shaq, The Roots, John Oliver, Meghan Trainor, Rachel Brosnahan, Anthony Anderson, Mumford & Sons, and Kelly Clarkson to take on the beast of a song.

Kelly Clarkson and Meghan Trainor give flawless performances… but trust me, that’s not the fun part of the video. Look out for Shaq’s lip-licking, Brosnahan’s high note, and John Oliver stellar performance on the chorus. And if you expected Mumford & Sons or The Roots to handle the song well… you’d be wrong!

Watch the madness for yourself in the video from The Tonight Show Starring Jimmy Fallon: