In honor of what would have been the Nirvana frontman's 45th birthday tomorrow, February 20, Pigeons & Planes has put together a list of 20 facts about Kurt Cobain that most people haven't heard before. Did you know he used to intentionally mess up live versions of "Smells Like Teen Spirit," and that he once played in a Creedance Clearwater Revival band? Check out the whole list at Pigeons & Planes.

20 Things You Didn't Know About Kurt Cobain