Write the word symphony on the board. Tell them that the symphony they will hear today is Mozart's 40th. Mozart's 40th symphony has 4 movements. Tell the students that composers like to make each movement of a symphony have a character all its own. They want us to hear a difference between each of the 4 movements.
Musicians call loud and soft dynamics .
Write it on the board and add mood . In music there are many varieties of tempo and dynamics, but for today we will just use 2 contrasting dynamics, loud and soft, and 2 contrasting tempi, fast and slow. We should all be in agreement about the tempo and the dynamics of each movement of Mozart's 40th symphony, but the last term, mood, is a much more personal category, and each of you may have a different idea about that. You will each have your own opinions and responses to the mood, and should use your imaginations to discover just what mood the music creates in you. Have the students take out scrap paper and pencils and copy what is on the board.