New York-based experimental pop troupe Dirty Projectors just released a new track, “Buckle Up,” that will be released as a tour-only 7″ single. The band will be giving copies away at their shows this summer, and is asking fans to follow it on Twitter, where it will tweet a password an hour before doors for each concert. The band plays Philadelphia on September 1 for the Made in America festival, and you can hear the new song below.