It does depend on the crowd, which is where the DJ crowd reading skills come in, but generally speaking I find that most gigs I play require a spread of music, new, newish, and the some classics. Playing brand spanking new stuff all night only really works when you’re entertaining other DJ’s or, more likely, trying to impress them. The crowd are what counts so entertain and, where possible, educate them. Dig out those classic tunes!