Eat, drink, chill out, and, in the process, lend a financial boost to Decibel, the local organization that hosts a world-class electronic-music fest every September. Tonight's gala features Helios, an elite purveyor of beautiful, meditative ambient music, and Seattle's Lusine, whose productions exude emotional depth and variegated textural splendors. Classical violinist/electronic-music composer Rena Jones and the Seattle Pianist Collective also appear, along with electronic-music-enhancing pan-Asian cuisine courtesy of Wild Ginger. (Triple Door, 216 Union St, 838-4333. 7 pm, $50 [includes food/beverage], all ages.)