Stone and Parker are best known for their show and hit movie, South Park and were recently in London working with Tony-award winning Jeff Marx (Avenue Q) on four songs for the new musical that they hope is Broadway bound. Marx told Bang Showbiz, "Trey and Matt were over with me in London recently... and so far we've written about four songs but we've got loads more ideas, the show is going to have nothing to do with their show, 'South Park,' or my musical ['Avenue Q']. It'll be something totally new and it's going to be something totally different."