iheart Radio Music Festival, Las Vegas
Sept. 20-21, MGM Grand Arena
Performances by: Justin Timberlake, Katy Perry, Elton John, Muse, Tiësto, Chris Brown, Keith Urban, J. Cole, Bruno Mars, Phoenix, Zedd, Maroon 5, Miguel, Tim McGraw, Ke$ha, Thirty Seconds to Mars, Benny Benassi. Special live appearance by Queen and Adam Lambert, and other special surprise guests.
