U2
Bono and the boys kicked off the show with "Get On Your Boots," a song not eligible for a Grammy tonight.
Katy Perry
The time is ripe for the singer, as well as for her outfit.
Kanye West & Estelle
The pair teamed up for a tight performance of their "American Boy."
Jennifer Hudson
The singer offered a moving rendition of "You Pulled Me Through."
Sir Paul McCartney & Dave Grohl
Nothing fancy for these two, except for a simple, rocking performance of "I Saw Her Standing There."
Kid Rock
The suited-up Kid—and his excellent band and backup singers—offered up a trio of delights, culminating with "Rock n Roll Jesus."
Stevie Wonder & Jonas Brothers
The polite young pop stars teamed up with a musical powerhouse, and the results were, well, a little uneven.
M.I.A.
Dancing on her due date, the "Paper Planes" pixie reportedly started feeling contractions following the performance.
Miley Cyrus & Taylor Swift
The teen sensations teamed up for a sweet version of Swift's "Fifteen."
Carrie Underwood
The gammy Grammy winner has a leg—or two—up on the competition.
Radiohead
Taking a cue from Fleetwood Mac and college football, the British art rocker performers teamed with the USC marching band to a number on "15 Step."
M.I.A. & Lil Wayne
The two were part of the rap pack summit that included Kanye West, Jay-Z and T.I.