Nicki Minaj and Lady Gaga

Nicki Minaj, Lady Gaga, & Alicia Keys to Play iHeartRadio Music Festival

The biggest names in pop music are coming together on one stage. Clear Channel has announced the star-studded lineup for the iHeartRadio Music Festival, the largest live concert event in radio history.

Ryan Seacrest will host the two-day music extravaganza at the MGM Grand in Las Vegas on September 23 and 24 to celebrate the launch of the new iHeartRadio, which will combine broadcast radio stations and custom stations in one free digital service.

The first day’s lineup includes Alicia Keys, Coldplay, the Black Eyed Peas, Bruno Mars, Carrie Underwood, John Mayer, and Jane’s Addiction. On Sunday, Lady Gaga, Jennifer Lopez, Nicki Minaj, Steven Tyler, Kenny Chesney, Rascal Flatts, David Guetta, and Sublime with Rome will take the stage, along with special performances by Usher and Sting.

“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 Ryan Seacrest in a statement. “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 iHeartRadio, while seeing the greatest musicians in the world on one stage.”

Pre-sale tickets are available now with a special Facebook code. They go on sale to the general public beginning July 16 at 1 a.m. EST.