This packed three-CD set unfolds slowly and languidly, without getting sleepy. The first disc, labeled “Organic,” features tracks like the sleek house of Tosca’s “Superrob.” Disc Two (“Electronic”) features Carl Craig’s winding “A Wonderful Life,” Cerrone’s disco classic “Supernature,” and Gus Gus’s warm “Moss.” And the final, lone, unmixed disc (“The Future”) takes a much darker approach, anchored by Nick Galea & Native’s “Dropped.” This is the kind of after-hours music that’s more than just the sonic wallpaper of far too many chill-out compilations.