The Grammys Add Heavyweight Performers...

Kid Rock, Robert Plant & Alison Krauss, Rihanna, and U2 are the latest performers announced for the 51st Annual GRAMMY Awards.

They join previously announced performers Kenny Chesney, Coldplay, Jennifer Hudson, Jonas Brothers, Lil Wayne, Paul McCartney (with special guest drummer Dave Grohl of Foo Fighters), Katy Perry, Radiohead, T.I. and Justin Timberlake, Carrie Underwood, and Jay-Z, Lil Wayne, T.I. and Kanye West in a special performance of their hit single "Swagga Like Us."

The 51st Annual GRAMMY Awards will be held Feb. 8 at Staples Center in Los Angeles, and will be broadcast live in high-definition TV and 5.1 Surround Sound on the CBS Television Network at 8–11:30 p.m. (ET/PT). The show will also be supported on radio via Westwood One worldwide and covered online at GRAMMY.com and CBS.com, on Twitter at "theGRAMMYs," on Facebook at "The Recording Academy," on YouTube at "51stGRAMMYs," and on Last.fm at "the51stgrammys."The GRAMMY Pre-Telecast will be streamed live on GRAMMY.com on Feb. 8 at 4 p.m. ET/1 p.m. PT. Additional performers, presenters and special segments are scheduled to be announced.