That ever-present plague of “unforeseen circumstances” has forced Klaxons to cancel their upcoming North American tour. The trek included less than a month of dates, so we’re just going to go ahead and assume that all is not well in the Klaxons camp. The British band is offering an exclusive song to ticket holders, however. Just email info@klaxons.net with your proof of purchase and you’ll most likely be treated to a track that’s like the following (unfairly) scrapped EP…