Happy Halloween, people! If you’ve ever wondered what Paul McCartney would look like as a cat, you’ve come to the right place. Let’s celebrate the day by looking at Halloween photos of famous musicians, shall we? We have Kurt Cobain as Barney, Justin Vernon as Garth, MGMT as the cast of Scooby-Doo, and more. Check ’em out after the jump, and hit the comments to let us know who would win your costume contest.