When The Stones played Madison Square Garden on Novemebr 27, 1969, Bill and Terry Hanley did their sound.\rbr\rbrWhen The Stones played Madison Square Garden on Novemebr 27, 1969, Bill and Terry Hanley did their sound.\rbr\rbrBill and Terry Hanley designed, built and operated audio systems that brought live sound reinforcement into the modern era. They toured with The Beatles, .\rbr\rbrBill and Terry Hanley did sound for blues legend Big Mama Thornton at the historic Denver International Pop Festival on June 27, 1969.