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The superstars, who could as well be in the nomination list, have been tapped to perform before audience in Los Angeles.
Aldean scores a whopping of eight nods along with Zac Brown Band, while Swift who gets six is overshadowed by Thompson Square with seven.
Pitted against Keith Urban, Jason Aldean and Brad Paisley, the two country singers would compete for the top entertainer of the year trophy.
The 'My Kinda Party' crooner goes to the countryside, driving down the dirt road and filling his mind with some nostalgic events along the way.
Katie Holmes has won a formal apology from editors at U.S. tabloid Star after filing a $50 million (GBP31.25 million) defamation lawsuit against them over an article suggesting she was a drug addict.
Singer Melanie Brown has signed on to become the third judge on Australia's The X Factor.
Steven Tyler credits a teary confrontation with his teenage son with helping him realise how bad his drug habit had become, because it forced him to deal with his addiction for the sake of his family.
Justin Bieber's foray into country music has paid off - his collaboration with Rascal Flatts has earned him a top nomination at the 2011 CMT Music Awards.
Aldean has spent more weeks at the number-one spot on country music radio charts than any artist in the past year.
The duet performance marks the first time the 'American Idol' singer sings at Country Music Association Awards.
Those three artists battle against each other to win the top honor, Artist of the Year, along with two other competitors Ke$ha and Lady GaGa.
Keith Urban, Blake Shelton, Sara Evans, Jaron and the Long Road to Love, Christian Kane and Brad Paisley have also premiered their videos.