Decibel co-hosts this late-night party at Bumbershoot, encompassing bubbling, popping techno (Claude Von Stroke), proto-mashups (Z-Trip), OG electro-funk (DâM-FunK), and best of all the loose, organic beats and lush, upward spiraling melodies of Four Tet. With Jokers of the Scene, DJ Craze. ERIC GRANDY

Sept. 3-4, 10 p.m., 2011