Kanye, Rihanna, And Sir Paul McCartney Bring The House Down With "FourFiveSeconds"

In a night full of ballads and slow jams, this performance was the best.

This year's Grammys featured a ton of live performances, most of them fairly tepid. One exception: the much anticipated collab between Kanye, Rihanna, and Sir Paul McCartney for their song "FourFiveSeconds." It brought the house down.

Rihanna was fire.

Kanye too.

And the threesome got the crowd moving.

Rihanna was feeling herself.

Kanye did his Kanye thing.

And for the song's breakdown, the trio gave it over to the clap-happy crowd, who happily sang along. Everyone was "four five seconds from wildin'."

Madonna and Jay Z.

Kim.

It was triumphant, and -- before Sia's impressive performance which featured a surprise Kristen Wiig -- was easily the best performance of the night by far. But don't take our word for it.

Taylor thought so too.

And ?uesto.

Kim too, of course.

Dave Grohl's face said it all.