Chris Brown to perform in Grammy Award 2012.

Chris Brown will perform Sunday at this year’s Grammy Awards, the event where his career almost ended three years ago.

This will be Brown's first appearance at the Grammys since his 2009 assault on then-girlfriend Rihanna during Grammy weekend. That year both stars were scheduled to perform, but both canceled. Rihanna, however, has since appeared on the show.

Chris Brown

Despite being nominated in years since, Brown has not attended the ceremony. The performance is not meant to be formally announced prior to the show.

Brown is up for three Grammys, including Best R&B Album for his 2011 opus,F.A.M.E., as well as Best Rap Performance and Best Rap Song for his track "Look at Me Now," which also features Lil Wayne and Busta Rhymes.

Rihanna is also slated to attend on Sunday. She's set to take the stage with Coldplay and is up for a handful of her own awards including Album of the Year and Best Pop Vocal Album for Loud as well Best Rap/Sung Collaboration for "What's My Name?" which features Drake.

Chris Brown and Rihanna

Brown and Rihanna were supposed to perform at the 2009 Grammys, but that changed after Brown attacked the pop singer in the early morning hours before the show. Since then, Brown hasn’t attended the Grammys, though he was nominated for three awards last year.

Rihanna

Rihanna and Brown won't be the only two A-listers taking the stage at Sunday's show. Adele, Katy Perry, Taylor Swift, Paul McCartney, Foo Fighters, Bruno Mars, Kelly Clarkson, Jason Aldean and Nicki Minaj are also confirmed to perform live at the 54th annual awards show, which will be hosted by LL Cool J and take place in Los Angeles.