Usher preps for Halloween, Devin Townsend films a puppet show, Simon LeBon muses on Gaddafi, Deadmau5 quotes a cool film and heaps more. Check out what musicians are up to on the twitter today. Duran Duran frontman Simon LeBon and brother-of-Mark Samantha Ronson are discussing the death of Muammar Gaddafi. Super drummer Mike Portnoy weighs