Its been a fascinating thing because we didnt really know how to write when we started South Park at all. Its been like, weve just sort of grown up a bit and its amazing to just see how, if you take Butters and Cartman and put them in any scene, it works. – Trey Parker
No, writing musicals is the hardest thing in the world. And it was really funny, because I remember when the South Park movie came out, there were some critics that said, Well its obvious that in order to get it to be 90 minutes they filled some time with music. – Trey Parker