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Now that's a lineup! The fourth annual iHeartRadio Music Festival boasts of some of the biggest names in pop across the globe, including One DirectionParamoreTaylor SwiftColdplayNicki MinajEd SheeranAriana GrandeUsherEric ChurchLordeZac Brown BandCalvin HarrisMötley Crüe and more. That's right—Top 40 radio is coming to life for one weekend in Las Vegas. Brace yourself!

The insane concert will take place at the MGM Grand Hotel and Casino on September 19 and 20. iHeartRadio Music Festival Village will set up shop across from the Luxor Hotel with performances by Iggy AzaleaKacey Musgraves, Magic!, the Pretty RecklessChildish GambinoNeon Trees, and Lil Jon

Turn down for what? (Who knows, maybe Lil Jon's feline friends will show up.)

Find out more about the festival here, and keep your fingers crossed for some Swifty/Sheeran bestie action with an unexpected duet or two!