Lady Antebellum lead the country finalists for the 2012 Billboard Music Awards with four nods. They're followed by Blake Shelton and Jason Aldean, who can each be found in three country categories.

In addition, three country acts -- one being Lady A -- find themselves up for all-genre awards. Taylor Swift is up against Bon Jovi, Take That, U2 and Roger Waters in the Top Touring category, while Lady A will duke it out with the Black Eyed Peas, Coldplay, LMFAO and Maroon 5 for Top Duo/Group. Scotty McCreery will face off against Bad Meets Evil, Big Sean, Foster the People and Wiz Khalifa for Top New Artist.

In country rankings, the Top Artist list includes Lady A, Taylor, Jason, Blake and the Zac Brown Band. Lady A's We Own the Night, Jason's My Kinda Party, the Band Perry's self-titled debut, Luke Bryan's Tailgages & Tanlines and Scotty's Clear as Day all made the short list for Top Country Album. Rounding out the genre are Top Country Song prospects "Dirt Road Anthem" from Jason, "Country Girl (Shake it for Me)" by Luke, "Just a Kiss" from Lady A, "Honey Bee" by Blake and the Eli Young Band's "Crazy Girl."

Carrie Underwood is among the performers already announced to perform at the ceremony, along with Justin Bieber, LMFAO and The Wanted.

The 2012 Billboard Music Awards will take place at Las Vegas' MGM Grand and be broadcast live Sunday May 20, 8:00 PM ET on ABC. The winners in each category will reflect Billboard's chart rankings, which include album sales, downloads, radio airplay, touring, streaming and social interaction. Get a full list of finalists here.

See Lady A Discuss the Moment They Knew They'd Made It

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