All musical instruments make waves in the air. These are caused by vibrations in the instruments. For example, in a guitar the string vibrates when it is plucked. Often, musical instruments have a resonator, which is usually a hollow, box-like

Sounds can be loud or soft, high or low and long or short. We also feel some sounds more pleasant than other because of their sound quality, or timbre. Musical instruments are sound machines specially designed to produce sounds for music. Each