Tickets are currently $15 and will increase to $20 as the event draws closer.
The performers aren't household names, says festival PR director Morgan Tepper, but that's precisely the point: "It's a little bit risky because it's all underground artists, but that's been Flash's M.O. since they opened."
Update: The festival has been moved to the D.C. Pavilion Beer Garden, which is at 1399 Fifth St. NE, behind Union Market.
The festival will take place at 300 Morse St. NE, an outdoor space tucked among warehouses a few blocks from Union Market. Tepper says there will be food trucks, bars and a custom-built, high-fidelity Jamaican-style sound system, which was created by Yola, a member of the local Grand Ancestor Sound System.
This is Flash's first festival outside the club, booked with local promoters Prescription, but Tepper says it won't be the last.
The Sidewalk Ends. Sunday, July 24, from noon to 11 p.m. 300 Morse St. NE. $15-$20.