Lady Gaga was announced Tuesday as the first confirmed act for the Grammy Nominations Concert Live TV special, scheduled for November 30th at the Nokia Theatre in L.A.  Rapper / actor LL Cool J will once again serve as host of the one-hour event, and Jason Aldean will also perform. 

This is the fourth year that Grammy nominations will be revealed during a primetime TV special, which will be broadcast live in HDTV and Surround 5.1 on CBS.  Tickets for the event go on sale Friday at noon ET, and can be purchased from Ticketmaster or the Nokia Theatre's official website.

The Grammy Awards will also be broadcast live on CBS, from the Staples Center in L.A. on February 12th.