Online voting by fans determines which musical acts are honored at the annual ceremony at the Nokia Theatre in Los Angeles, which features performances by the Black Eyed Peas, Jennifer Lopez, Adam Lambert, Jay-Z, Alicia Keys and more. Vying for breakthrough artist are Lady Gaga, Keri Hilson, Gloriana and Kid Cudi; Kings of Leon, Taylor Swift, Lady Gaga, Eminem and Michael Jackson are up for artist of the year.Watch 2009 American Music Awards Live Stream on your PC
