Old meets new at Swallow Hill's third-annual folk music fest and 30th birthday party. The evening begins with performances from young up-and-coming artists like Colorado's Boulder Acoustic Society and Swedish singer/songwriter the Tallest Man on Earth (Kristian Matsson). Folk veterans like Leo Kottke, Rickie Lee Jones, and Hot Rize finish the show. Sat, Mar. 28, 6 p.m. Ellie Caulkins Opera House [2], Speer Blvd. and Arapahoe St., $55-$125, official website [3]