Nicki Minaj, One Direction, Ed Sheeran, Paramore and Iggy Azalea are also part of the fourth annual lineup.
The iHeartRadio Music Festival makes its fourth trip to Las Vegas on September 19 and 20, and this year's lineup is appropriately star-studded. Taylor Swift, Coldplay, Usher, Ariana Grande, Nicki Minaj, Motley Crue, Zac Brown Band, One Direction, Ed Sheeran, Paramore, Iggy Azalea, Train, Eric Church, Lorde, Calvin Harris, Bastille and Steve Aoki are the first performers to be confirmed for the main stage at MGM Grand Hotel & Casino.
Swift, Usher, Minaj and Harris are among this year's return performers, and are all prepping major releases for the fourth quarter, which iHeartRadio has helped labels and managers tee off for three years running.
"We want to continue to deliver the goods for artists and help their development, and to see more great music to keep the radio industry healthy," Tom Poleman, president of Clear Channel's national programming platforms, tells Billboard. "It's great to have the diversity of genres this year, too. We have Motley Crue, which is obviously very different from Train, Eric Church, or Ariana Grande, but that's what makes it so special. You'll often have people on the side of the stage watching other bands. It's not unthinkable to see someone like Coldplay watching Zac Brown or One Direction because they're already on-set and they never get to see them play themselves."
The daytime iHeartRadio Music Festival Village will also return for a second year, featuring performances from Neon Trees, Kacey Musgraves, Childish Gambino, MAGIC!, The Pretty Reckless, Nico & Vinz, Lil Jon and Iggy Azalea, the latter of whom earns this year's Miley Cyrus slot for doing double-duty on both the Village and MGM Grand stages. "We always say the artists who perform at iHeartRadio are the biggest of the big, the leaders in every genre of music," Poleman says. "And Iggy has really dominated the pop charts as of late. She's earned that spot."