VIDEO: Queen and Adam Lambert Rock Out at iHeartRadio Music Festival

Clear Channel's 2013 iHeartRadio Music Festival, where the music of the iHeartRadio app comes to life, will be televised as a two-night primetime special on The CW Network to kick off their fall season on Monday, Sept. 30. In the meantime, check out clips of Adam Lambert and Queen performing "Bohemian Rhapsody" and more!

Hosted by Ryan Seacrest, the sold-out festival, now in its third year, kicked off last night, September 20, and concludes today, September 21, at the MGM Grand in Las Vegas. This year's incredible lineup of music's top talent includes performances by artists including Justin Timberlake, Paul McCartney, Katy Perry, J. Cole, Elton John, Muse, Tiësto, Chris Brown, Keith Urban, fun., Miguel, Bruno Mars, Phoenix, Zedd, Maroon 5, Tim McGRaw, Ke$ha, Drake, Thirty Seconds to Mars, Benny Benassi, Queen + Adam Lambert, a special guest appearance by Robin Thicke and this year's Macy's iHeartRadio Rising Star winner, The Summer Set, plus other surprise collaborations.

In addition to the star-infused lineup, this year's iHeartRadio Music Festival also welcomes celebrity guest presenters Britney Spears, actress Kate Hudson, professional athlete Shaun White, reality stars Khloe Kardashian Odom and Kendall and Kylie Jenner, actress Ashley Greene, singer Kelly Rowland, comedian Kevin Hart, "Pretty Little Liars" stars Lucy Hale and Shay Mitchell, "The Walking Dead" actor Norman Reedus, Ian Somerhalder of "The Vampire Diaries," Stephen Amell of the CW series "Arrow," Jessica and Jep Robertson from "Duck Dynasty," and comedian and actress Rebel Wilson.