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The first list of performers at this year's Grammy Awards have been announced, with Rihanna, Mumford & Sons and Taylor Swift joining the line-up for the 2013 award show.
The artists performing are all nominated for awards at the event, with London band Mumford & Sons in the running for the Album Of The Year award with their record breaking Babel album. Their second album was the fastest selling album of 2012.
Also performing at the ceremony will be The Black Keys, nominated for Album Of The Year and Best Rock Album for El Camino and Record Of The Year for their track 'Lonely Boy'. fun. will also perform and compete for Album Of the Year, Best New Artist and Song Of The Year for their international smash hit 'We Are Young', with Janelle Monae.
Rihanna and Swift sneak into the nominations despite neither Unapologetic or Red being eligible for nomination. Rihanna scores nods for tracks from her 2011 release Talk That Talk and Swift gains a nomination for a track she contributed to the Hunger Games soundtrack.
Rihanna also performed at the 2012 Grammy Awards
Despite the huge number of categories and nominees for the 2013 ceremony, there is one major star missing from the list - Justin Bieber.
His manager is none-too-happy at the snub, taking to Twitter to vent his anger when the nominations were announced in December 2012.
His manager, Scooter Braun, wrote: "First..congrats to @carlyraejepson, thought u deserved a best new artist nom, but proud Call Me Maybe got u 2 noms. so proud of u (sic)."
But then continued, "second...this time there wont be any wise words, no excuses, I just plain DISAGREE. The kid deserved it. Grammy board u blew it on this one."
He went on to argue that Bieber had done well to maintain momentum and had won people over in the last year.
Below: red carpet arrivals at the 2012 Grammy Awards