Taylor Swift & Nicki Minaj Featured on Star-Studded iHeartRadio Music Festival Lineup

Posted Thursday July 24, 2014 1:33 PM GMT

Getting ready for the fourth annual iHeartRadio Music Festival, Ryan Seacrest filled fans in on the star-studded lineup during his Kiss FM radio show on Thursday (July 24).

During his chat, the “American Idol” host explained, "People can expect a weekend that they will never forget. I saw the list coming together, and I was so excited to announce it because it covers everything in music – all these artists in one place for the weekend and the biggest fans who make the pilgrimage who come to see them."

This mega-concert will feature artists from various genres including country, rap and pop.

Featured performers include Taylor Swift, Coldplay, Usher, One Direction, Ed Sheeran, Ariana Grande, Nicki Minaj, Motley Crue, Zac Brown Band, Paramore, Iggy Azalea, Train, Eric Church, Lorde, Calvin Harris, Bastille, Steve Aoki, Neon Trees, Kacey Musgraves, Childish Gambino, Magic!, The Pretty Reckless, Nico & Vinz, Lordeand Lil Jon.

The two-day concert event will also feature a few surprise collaborations. Ryan discussed the surprise artists saying, "We literally want them to happen and no one know about them [beforehand]. We sneak an artist in, and all of a sudden, they're on stage. It creates this magic."

Seacrest finished, "These artists are all at the top of their game. They do this for a living; they're doing it every night on tour – but they also know that the other artists there are doing it are there and will be watching. So they try and change it up, amp it up a little. All eyes are on them."

The iHeartRadio Music Festival takes place inside Las Vegas’ MGM Grand on September 19 and 20.

Photo Credit: Getty Images