GRAMMY Nominations Concert with Katy Perry & Taylor Swift

Katy Perry and Taylor Swift have been aded to this year's Grammy Nominations Concert Live!! – Countdown to Music's Biggest Night, set to take place this Friday, December 6th, at 10 p.m. EST on CBS

Other additions to the lineup include T.I. and members of Earth, Wind, and Fire. They all join a roster of live talent that includes Robin Thicke, Macklemore & Ryan Lewis, and Keith Urban.

LL Cool J will once again host the proceedings, which are officially billed asThe Grammy Nominations Concert Live!

The 56th Annual Grammy Awards take place in Los Angeles and will air live on CBS on January 26th, 2014, starting at 8 p.m. EST. Ahead of the big night, the Grammys will honor Carole King, who will receive the MusiCares 2014 Person of the Year award during a charity fundraiser on January 24th; the ceremony will feature performances from Lady Gaga, the Dixie Chicks, Steven Tyler, James Taylor, Bette Midler and Jason Mraz.

Watch Live here 

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