Ryan Seacrest and Jennifer Lopez announced: Clear Channel radio will hold the first ever iHeartRadio Music Festival at the MGM Grand in Las Vegas on September 23 and 24. Hosted by Seacrest, the two-day festival is set to break records as the biggest live concert festival in radio history.“This is a once in a generation gathering of artists and fans from all over the country for a true, must-see music event,” said Seacrest. “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.”Artists taking part include Lady Gaga, Coldplay, The Black Eyed Peas, Kenny Chesney, Nicki Minaj, John Mayer, Kelly Clarkson, Carrie Underwood, 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. ET at iHeartRadio.com with the keyword “Vegas.”