Franz Josef Haydn was so fed up with his audiences falling asleep that he made a piece of music with a loud bang in the middle of it. His aim was to make the point that his music should be listened to properly, with what we call ‘active listening’. He was half joking – and his music became known as “The Surprise Symphony”. He liked jokes though, as one time he made music called “The Farewell Symphony” and one by one the performers leave the stage until there are just two instruments left! It was said that he wanted more money from his boss and was sending a message that he would leave if he didn’t get it!