This Saturday, October 18, the Boulder Theater will host a celebration for the 15th birthday of Boulder’s Mountain Sun Pub & Brewery. As in past years, the Pearl Street All-Stars will take the stage for a show that will benefit KGNU, Boulder County’s only non-profit community radio station. The All-Stars will be comprised of George Porter Jr., Kyle Hollingsworth, Eric Krasno, Adam Deitch and Hazel Miller. The core quintet will be augmented by the 14th Street Horns: Danny Sears (Panjea) Dominic Lalli (The Motet) and Jon Stewart (The Motet).