Def Leppard play this year's iHeartRadio Music Festival at the T-Mobile Arena in Las Vegas September 20th and 21st. Listen all week at 9:40a, 11:40a, 1:40p, 3:40p, 5:40p, 7:40p to win your way there AND $1000. But this isn't the band's first go-round in Vegas. In 2013, they did a residency at the Hard Rock. Here's the complete show.