Mariah Carey to perform, LL Cool J and Taylor Swift to co-host "The GRAMMY Nominations Concert Live!!"

GRAMMY.com

Five-time GRAMMY winner Mariah Carey is slated to perform at "The GRAMMY Nominations Concert Live!! — Countdown To Music's Biggest Night" on Dec. 3 and two-time GRAMMY winner LL Cool J and 50th GRAMMY nominee Taylor Swift will serve as co-hosts for the one-hour TV special.

The special — which will also celebrate the grand opening of the GRAMMY Museum at L.A. Live — will take place at Nokia Theatre L.A. Live, and will be broadcast in HDTV and 5.1 Surround Sound on the CBS Television Network from 9–10 p.m. ET/PT. Previously announced performers include five-time GRAMMY winner Celine Dion, six-time GRAMMY winners the Foo Fighters, 14-time GRAMMY winner B.B. King, five-time GRAMMY winner John Mayer, and Swift.

"The GRAMMY Nominations Concert Live!! — Countdown To Music's Biggest Night" will announce nominations in several categories, feature performances by past GRAMMY winners and nominees, and will set the stage for the 51st Annual GRAMMY Awards on Feb. 8, 2009. The special marks the first time nominations for the annual GRAMMY Awards will be announced live on prime-time television. Following the live telecast, guests will experience a one-hour exclusive concert by one of the evening's performers in celebration of the grand opening of the GRAMMY Museum.

Tickets are on sale now at all Ticketmaster outlets, via phone at 213.480.3232, or online at www.ticketmaster.com, with proceeds benefiting the GRAMMY Museum.

"The GRAMMY Nominations Concert Live!! — Countdown To Music's Biggest Night" is produced by AEG Ehrlich Ventures, LLC and John Cossette Productions. John Cossette and Ken Ehrlich are the executive producers.