iHeart Radio Fest 2012: Taylor Swift, Rihanna & More Amongst Performers

Clear Channel, which also owns 850 terrestrial radio stations in the U.S., says Taylor Swift, Aerosmith, Rihanna, Usher, Bon Jovi, Lil Wayne, Green Day, Miranda Lambert, Mary J. Blige, Shakira and others are among the performers set for the festival on Sept. 21 and 22 at the MGM Grand. Ryan Seacrest will introduce the first night's show.

The stellar lineup suggests the two-day marketing blitz to promote Clear Channel's iHeartRadio digital music service is on its way to repeating the success of last year's debut concert.

Last year's inaugural iHeartRadio concert featured Jay-Z, Coldplay, Alicia Keys, Carrie Underwood, Steven Tyler, Rascal Flatts, Nicki Minaj and Lady Gaga, among others.

The concert will play live on iHeartRadio.com and Clear Channel stations nationwide, Poleman said. Video of some performances will also be available through a partnership with Yahoo, he said, adding that Clear Channel plans to make the two-day, all-star show an annual event.

Tickets for the iHeartRadio Music Festival 2012 go on sale July 14.