It wouldn't be The American Music Awards without some top notch country, hip-hop and rock talent! The awards show signed on Taylor Swift, Nicki Minaj and Linkin Park to perform. Nicki Minaj and Rihanna the AMA's leading nominees, both with four nods each. Justin Bieber is up for artist of the years as well. Drake, Maroon 5, Usher and One Direction are up for 3 awards each.