Rihanna, Bruno Mars and Sting will offer a special performance together at the 55th Grammy Awards, the National Academy of Recording Arts & Sciences said.
Kelly Clarkson will also be one of the voices heard at Sunday's ceremony at Staples Center in Los Angeles.
Beyonce, Hunter Hayes, Jennifer Lopez, Pauley Perrette and Prince will likewise be on hand as hosts of the evening event.
The Lumineers, Carrie Underwood and Jack White were previously confirmed for the gala, which will feature a special performance by Dierks Bentley and Miranda Lambert plus a duet by Elton John and Ed Sheeran.
Chief host of the show will be LL Cool J.
The kings of hip-hop Kanye West and Jay-Z, R&B singer Frank Ocean, the rock band The Black Keys, folk group Mumford & Sons and indie pop band FUN start out as favorites to take home some Grammys with six nominations each.
The Black Keys with "El Camino," Mumford & Sons with "Babel," and Jack White for "Blunderbuss" are competing for the most prestigious of all the awards, Album of the Year, along with Frank Ocean for "Channel Orange" and FUN with "Some Nights." EFE