Down will drop 'Down IV Part I - The Purple EP,' a six-song set, on Sept. 18, and in advance of the release they are offering a full stream via Billboard.com. The band has made no secret of the fact that they plan to follow it with three more EPs, which begs the question. Why aren't they releasing full albums? The answer is simple. It's easier and more efficient to go the EP route, since it gets music into a fan's hands sooner than later.