The clarinet is a woodwind instrument. It is made of either wood or plastic. The clarinet can play both high-notes and low-notes in the band. The clarinet section is usually broken into two or more groups that play different notes at the same time to create harmonies in the section.

Sound is produced on a clarinet by blowing air through a mouthpiece that contains a thin wooden reed. The reed vibrates as air passes through it and creates the tone. The sound is changed by pressing keys and covering holes using both the left and right hands.