“The Opening Act” takes you behind the scenes for the hottest concert of the season: the iHeartRadio Music Festival in Las Vegas. Go backstage with today’s biggest artists and get VIP access to Sin City’s music hot spots.

“The Opening Act” airs from 7:30-8 p.m. PT on KTLA, KTLA.com, KTLA+ and on select CW affiliates.

The iHeartRadio Music Festival took place Friday, Sept. 23, and Saturday, Sept. 24 at T-Mobile Arena with performances from Avril Lavigne, Black Eyed Peas, Diplo, Halsey, Lionel Richie, LL Cool J and many more.