Coming to Las Vegas: The Greatest Concert Ever!

Ryan Seacrest can add soon another title to his resume: host of the biggest concert in U.S. history. We're scarcely even exaggerating.

On September 23-24, the American Idol MC will be in charge of iHeartRadio Music Festival in Las Vegas. He says of the event:

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“This is a once in a generation gathering of artists and fans from all over the country for a true, must-see music event. The iHeartRadio Music Festival, like the iHeartRadio digital radio service, will showcase top artists across all genres of music. Listeners from all over America will travel to Las Vegas to celebrate the next generation of iHeart Radio, while seeing the greatest musicians in the world on one stage.”

Who will the concert include? Who will it NOT include?!? The acts already signed up are:

Coldplay, The Black Eyed Peas, Nicki Minaj, John Mayer, Alicia Keys, Kenny Chesney, Carrie Underwood, Jane’s Addiction, David Guetta, Rascal Flatts, Bruno Mars, Kelly Clarkson, Usher, Sting, Lady Gaga, Steven Tyler and Jennifer Lopez.

Tickets are available for pre-sale via the iHeartRadio Facebook page and will go on sale to the general public on July 16 at 1:00 p.m. EST at iHeartRadio.com, keyword “Vegas.”