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A manic, high-energy, single-day takeover of Glen Echo Park that will completely redefine your understanding of acoustic music. Orchestrated by the Folklore Society of Greater Washington, this absolute beast of a festival has compressed its usual multi-day footprint into a singular, high-octane 7-hour marathon on Sunday, August 23, 2026 (12:00 PM–7:00 PM). Entry costs you a grand total of zero dollars—though dropping a donation keeps the cosmic gears turning.