They're back! Yup, it's Chiddy Bang, and they've just released a new mini-mixtape. And guess what? It's dope. The boys from Philly have done it again. Only this time they are flying first class on Air Swell. But don't let their new mode of transportation fool you, they still have that Swelly Express vibe. Check out "Hey London" below. Then hit the jump for the whole tape.