Aspen’s newest summer music event brings two days of live performances to the base of Buttermilk this summer. The inaugural Up in the Sky Festival features headliners Rüfüs Du Sol, Kacey Musgraves, Glass Animals, SG Lewis Live, Suki Waterhouse, Role Model, Nessa Barrett, and more. Up In the Sky combines live music with Aspen's scenic landscape for a distinctive summer event. Located at the base of Buttermilk with views of the Elk Mountain Range, this two-day festival offers a blend of performances in an unforgettable mountain setting.