The sound of a power saw is one that I find reassuring. I enjoy it. Others, who fear cutting off fingers, do not like the sound of a power saw. When you have finished this section write the sentences below on the overhead and have the students copy it into their notes. Not all sounds that are pleasing are music.
Music is sound that is pleasing to the listener.
All sounds are not pleasing to all people. That is what gives music variety. This could be playing a recording of unrelated sounds. It could be playing notes at random on the piano. You may think of a different kind of demonstration.