SweetWater Brewing Co. and Happy Ending Productions announce Widespread Panic and Trey Anastasio Band will headline the 13th SweetWater 420 Fest, April 21-23, 2017. A 420 Fest first, Widespread Panic will take the stage two nights, playing four sets, and Trey Anastasio Band will perform two sets on one night. "Early Bird" 3-Day General Admission and VIP tickets go on sale Tuesday, September 20, at 10 a.m. EST at www.sweetwater420fest.com. 420 Fest lineup will also include Slightly Stoopid, Trombone Shorty & Orleans Avenue, Dark Star Orchestra, Anders Osborne, Twiddle, Sister Sparrow & The Dirty Birds, and Hip Abduction; additional headliners and 45 + musical and comedian acts will be announced in January 2017. SweetWater 420 Festival is produced by Happy Ending Productions, offering promotion, production, and event operations and logistics management. Happy Ending Productions' client list includes Camp Bisco, Counterpoint, Bonnaroo, Hookahville, and tour support for Phish, The Rolling Stones, ACDC and more.