Hip-hop and R&B fans have another music festival to add to their calendars. The IHeartRadio Music Festival, a two-day event hosted by Ryan Seacrest, will tap some of the biggest names in the music industry to perform for a crowd at the MGM Grand in Las Vegas, Nevada.

The concert, which will be available for live audio and video streams online, via mobile devices at www.iHeartRadio.com and Clear Channel's radio station websites, takes place Saturday, Sept. 23 and Sunday, Sept. 24. During the two days of performances, acts ranging from Nicki Minaj to Lady Gaga to Alicia Keys and Bruno Mars will take the stage.

Day one of the festival includes Keys and Mars, as well as the Black Eyed Peas, John Mayer, Coldplay, John Mayer, Jane's Addiction and Carrie Underwood. Day two will see Minaj, Gaga, David Guetta, Steven Tyler, Jennifer Lopez, Sublime with Rome and Kenny Chesney in front of the microphone. Performances from Sting and R&B king Usher will follow.

The IHeartRadio Music Festival celebrates the launch of the new iHeartRadio, a format combining broadcast radio stations and custom stations in one free digital service.

Interested concertgoers can obtain pre-sale tickets through Facebook now. General tickets go on sale July 16 at 1AM EST.

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