This past Sunday, legendary New York rock club CBGB hosted its last live show, a three-and-a-half-hour farewell by punk-pioneer Patti Smith. Founded in 1973, CBGB was the unlikely launching pad for a revolution in popular music. By being a dive in a bad neighborhood, desperate for acts, it became a place where anyone could play and be heard -- and "anyone" turned out to be The Ramones, Television, Blondie, the Talking Heads and many, many more. Although justly celebrated as the birthplace of punk rock, CBGB was, more importantly, the place where the DIY ("do it yourself") aesthetic crystallized -- the idea that anyone, regardless of technical skill or financial resources, could make great music. And for the last 30-plus years, the DIY aesthetic has powered much of music's innovation, whether as punk, college rock, alternative, indie or, most dramatically, hip-hop. Yet at the end of this month, CBGB will be gone (although there are alleged plans to resurrect it in Vegas).