Bob Dylan and Dr. Dre are set to perform songs at this weekend's Grammy Awards.
Bob, a 10-time Grammy and lifetime achievement winner, will join nominated British band Mumford & Sons and The Avett Brothers for a salute to acoustic music, while Dr. Dre will make his debut on the Grammy stage when he joins his protege Eminem.
The appearance will be Dr. Dre's first performance on live television in a decade. Eminem, who leads all nominees with 10, also will be joined by Maroon 5's Adam Levine.
Organisers of the Grammys have also announced that Zac Brown, Eva Longoria, Jennifer Lopez, Keith Urban and Will.i.am of The Black Eyed Peas will present gongs.
The awards take place on Sunday in Los Angeles.