The lineup also includes previously announced acts Christina Aguilera; Black Eyed Peas; Martina McBride; Justin Timberlake; Sting and Sean Paul; The White Stripes; and OutKast with George Clinton and Parliament Funkadelic, Earth, Wind & Fire, and Robert Randolph & The Family Band.

50 Cent is nominated for five awards this year, including Best New Artist, Best Male Rap Solo Performance and Best Rap Song ("In Da Club"), Best Rap Performance by a Duo or Group ("Magic Stick" with Lil' Kim), and Best Rap Album (Get Rich or Die Tryin').

Three-time Grammy-winners Foo Fighters--who are scheduled to perform with Grammy-winning jazz legend Chick Corea--are vying for Best Rock Album ("One By One") and Best Rock Performance by a Duo or Group with Vocals ("Times Like These"). Corea holds nominations for Best Jazz Instrumental Solo ("Matrix") and Best Jazz Instrumental Album, Individual or Group ("Rendezvous In New York"), and Best Instrumental Arrangement Accompanying Vocalists ("Armando's Rhumba" with Bobby McFerrin).

Dion, Keys and Marx will take the stage together during a tribute to four-time Grammy-winner Luther Vandross, and are slated to perform two of the singer's hits. Vandross, who last year suffered a serious stroke, is nominated for five Grammys this year: Song of the Year and Best R&B Song ("Dance With My Father"), Best Male R&B Vocal Performance ("Dance With My Father"), Best R&B Performance By a Duo or Group with Vocals ("The Closer I Get To You" with Beyoncé), and Best R&B Album ("Dance With My Father").

Hilary Duff, Kurt Elling, Faith Hill, B.B. King, Brian McKnight, Carlos Santana, and Steven Tyler and Joe Perry of Aerosmith have joined a roster of award-presenters that also includes Norah Jones, John Mayer, Pharrell Williams and actors Sean Astin and Amber Tamblyn.

The Grammy awards take place at the Staples Center in Los Angeles on Feb. 8, and will air live on CBS.