The iHeartRadio Music Festival is a two-day music concert festival held each year in September since 2011 by iHeartRadio in Las Vegas, Nevada, United States. From 2011 to 2015, the festival was held at the MGM Grand Garden Arena in Las Vegas, Nevada. In 2013, iHeartRadio added the free Daytime Village at the iHeartRadio Music Festival which takes place at the Las Vegas Village.[1][2] In 2016, the iHeartRadio Music Festival moved to the T-Mobile Arena and was held again there in 2017. Source: https://en.wikipedia.org/wiki/IHeartRadio_Music_Festival
