Rihanna, Usher Added To Grammy Nominations Concert

Lady Gaga, Ludacris, Lupe Fiasco and the Band Perry also scheduled to perform at November 30 event.

Rihanna and Usher have been added to the performance lineup for "The Grammy Nominations Concert Live! Countdown to Music's Biggest Night," set to go down November 30.

They join already announced acts Lady Gaga, Ludacris, Lupe Fiasco, Sugarland and Jason Aldean. Country crossover act the Band Perry will perform a full concert of their own after the Grammy nominations concert wraps up at L.A. Live's Nokia Theatre. LL Cool J will again host the show, which will air at 10 p.m. on CBS, Billboard.com reports. This marks the fourth year the Recording Academy had held one of these concerts.

As some of music's biggest names take the stage during the special, the nominations for major Grammy categories will be announced. The awards ceremony will go down February 12 at the Staples Center, and will air live at 8 p.m.

Over the course of her career, Rihanna has taken home four Grammy Awards including Best Rap/Sung Collaboration for "Umbrella," two trophies for "Run This Town" (including Best Rap Song and Best Rap/Sung Collaboration) and Best Dance Recording for "Only Girl (In the World)." Rihanna is currently riding high on the forthcoming release of her new album, Talk That Talk, and two buzzworthy singles, "We Found Love" and "You Da One."

In the thirteen years he's been nominated for Grammys, Usher has amassed seven, including wins for Best R&B Vocal Performance Male for "U Remind Me," Best R&B Vocal Performance Male for "U Don't Have To Call," Best Rap/Sung Collaboration for "Yeah," Best Contemporary R&B Album for Confessions, Best R&B Vocal Performance By a Duo/Group for "My Boo," Best Male R&B Vocal Performance for "There Goes My Baby" as well as Best Contemporary R&B Album for Raymond v. Raymond.

Recently, he has been taking over airwaves with his David Guetta track, "Without You."