Chart-topping artists Nicki Minaj, Usher and Iggy Azalea have been tapped to perform at the 2014 iHeartRadio Music Festival.

The two-night event, hosted by Ryan Seacrest, will take place at the MGM Grand Hotel & Casino in Las Vegas on Sept. 19 and 20.

Other performers on the eclectic bill include Ariana Grande, Calvin Harris, Ed Sheeran and Lorde.

Before the main event, Iggy Azalea, Lil Jon, Childish Gambino and other music acts will rock the mic at the iHeartRadio Music Festival Village on the Vegas strip on Saturday afternoon.

Tickets to the general public will go on sale July 26 at 1PM ET. However, Mastercard cardholders can cop tickets early starting today through Friday (July 25).

iHeartRadio

Watch 2014 iHeartRadio Music Festival Trailer