The mainstream and underground arts communities don't come together often enough, much less in collaboration with the city. But when the organizers of Unit E were approached about doing a music festival on the grounds of the Denver Performing Arts Complex, they jumped at the chance. With the help of the city, which shut down part of Champa Street for the occasion, they put together an impressive one-day event that included acts like Cody ChestnuTT, Wild Pack of Canaries and Nurses, as well as street art, interactive sound art and a tent featuring local noise artists. The festival gave many people a taste of a world they would not otherwise have seen or gotten to experience. If we're lucky, the event paved the way for future collaborations between the city and street-level artistry.