Willie Nelson and weed—their uplifting influence drifts across demographics, appealing equally to bikers, bankers, boomers, hipsters, and hippies. There's no more appropriate day than America's birthday (except maybe April 20) for Nelson to gather his bong-huffin', beer-guzzlin' flock at the Gorge and celebrate with the alt-country bands who worship him: Drive-By Truckers, Old 97's, Son Volt, and Amos Lee. (The Gorge, 754 Silica Road NW, George, 628-0888. 4:30 pm, $35-$79, all ages.)