The ALL IN Music & Arts Festival in Indianapolis, September 9-10 at the Indiana State Fairgrounds, is a truly unique festival experience that will feature headliners Tenacious D on Saturday and Trey Anastasio & Classic Tab on Sunday plus a jam-packed lineup of carefully curated artists, special appearances and collaborations unlike any other festival. The festival’s signature tradition is the ALL IN Dreamsets which are all-star live performances of beloved songs by iconic artists.