You won't soon forget a performance by the Everyone Orchestra. The improvisational show, led by conductor and founder Matt Butler, encourages the musicians—and those in the audience—to just let loose. Performers change regularly, but the Denver stop includes members of the String Cheese Incident, Moe., Elephant Revival, the Motet, and more. Know what you're getting into by watching one of these live performances before you go. Thu 4:20 p.m.
—Image courtesy of Jack Plunkett