Grammy winner Taylor Swift has been tapped to host The Grammy Nominations Concert Live!! -- Countdown to Music's Biggest Night .  The December 5 special on CBS, airing live from Nashville, will reveal the nominations in the top Grammy categories.  Taylor will co-host with LL Cool J.

Maroon 5 has already been announced as a performer on the show; Luke Bryan will now join them on the bill.  More performers and presenters will be announced in the coming weeks, and since the show is taking place in Nashville, it's a good bet that more country stars will be joining the lineup.

The show airs at 10 p.m. ET/PT on CBS.  Tickets for the event are available via Ticketmaster; if you go, you'll be treated to a one-hour exclusive concert following the live telecast.

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