Rolling Stone: For the last weekend of summer, some of the biggest Top 40 acts across all genres took the stage at the iHeartRadio Music Festival. Kanye West, Kenny Chesney, Diplo, Demi Lovato and Fall Out Boy hosted small sets across two days at Las Vegas’ MGM Grand Arena. The regularly top-charting artists were joined by a few rising stars, including the Struts and Hailee Steinfeld as well as veterans like Jennifer Lopez and Puff Daddy for a celebration packed with the most radio-friendly songs of the year.
