Once again, The CW will broadcast performances from the iHeartRadio Music Festival in Las Vegas to kick off its official TV season. This year, however, it will air as a four-hour special over two nights, Sept. 30 and Oct. 1; last year it aired for two hours on Oct. 1. What hasn’t changed: The special is focused on Clear Channel’s two-day concert event, the weekend of Sept. 20 and 21. This year’s festival will include performances by Justin Timberlake, Katy Perry, J. Cole, Elton John, Muse, Keith Urban, fun., Miguel, Bruno Mars, Maroon 5, Tim McGraw, Miley Cyrus, Jason Derulo, The Wanted, Avril Lavigne, Pete Tong, AWOLNATION, Ke$ha, Phoenix, Thirty Seconds to Mars, Queen + Adam Lambert and others who are TBD

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