Look, Billy Corgan – or William Patrick Cogan, as he likes to be known now – is a genius songwriter, an astounding guitar player, a cross between a beautiful soul and having a hard-rock snarl that will pound your heart with rage. But do not mistake him. He saw a human turn into a shape-shifter, as he tells Howard Stern. You can hear that William didn’t want to go there, but nobody leaves Howard with secrets.