The 2015 edition of the iHeartRadio Music Festival kicks off tonight and carries into tomorrow (September 19) in Las Vegas. Tonight, Kanye West headlines a bill that also includes performances from Coldplay, Lil Wayne, Disclosure, and more. Tomorrow, Nick Jonas closes out the festival following appearances from The Weeknd, Diplo, Trey Songz, and more. Thankfully, iHeartRadio is streaming both days in full and you can get a head start on tonight's proceedings below.
