What to Expect at the 2014 American Music Awards

Pitbull will step into the spotlight to host the 40th annual fan-driven awards show.
2:51 | 11/23/14

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Transcript for What to Expect at the 2014 American Music Awards
He says he gets nervous for this night. Pitbull warming up to host one of the biggest nights in music. Just hours from now, the American music awards where the fans pick the winners. I would love to be one of those dancers and move like that. That could happen. I have zero moves. This year Taylor swift is on tap to get the first award and only on "Gma," the big star ready to perform tonight and here's ABC's Cameron Mathison. ? Hey yeah ? Reporter: Explosively entertaining, we are behind the scenes of the American music awards with an exclusive preview of the only show where the fans vote for the winners. I know I'm going to be around the best talent in the world when I'm here. Reporter: Pitbull hitting up the stage in dress rehearsal and hosting tonight on ABC. The first ever dick Clark award for excellence will be given to the queen of catchy choruses by the one and only Diana Ross. Actually love that new Taylor swift record, it's amazing. To be able to watch her perform live will be a whole lot of fun. Reporter: And lord behind the soundtrack of the number one movie in the world, "The hunger game games:mockingjay, part 1" will hit the stage with "Yellow flicker beast." ? Jennifer Lopez and iggy azalea's assets also set to grace the stage. ? You got a big booty. Reporter: Backsides bewild bewildering TV execs. It's not hard. Hard to outdo iggy & J. Lo's booties. Reporter: Magic! Teaming up for a rare collaboration giving us a sneak peek during sound check. ? Not everybody knows how to arrange but but the amas have figured that out. ? Don't stop the party ? Reporter: For "Good morning America," Cameron Mathison, ABC news, Los Angeles. Okay, and something that we should point out exclusively is that lord will be performing her song from "The hunger games." "Yellow flicker beat." I'm a big board fan. You do love the lord -- I mean lord. She's 17 years old. Not going to take the bait on that. Great night. Catch the awards live at 8:00 P.M. Eastern right here on ABC. We should say that the host of the big night, pitbull will be performing right here on "Gma" tomorrow morning. You do not want to miss that and what's his little tab word. Dali -- Which means I'm done. Drop the Mike. I just dropped a pen.

This transcript has been automatically generated and may not be 100% accurate.

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