This document discusses the clarinet, including its sound and appearance, how it works, its history and composers who wrote for it. The clarinet belongs to the woodwind family and works by blowing air through a single reed, which vibrates and produces sound. It became popular in the 18th century when composers like Mozart and Brahms featured it in their orchestral works. The clarinet was invented in Germany around 1690 as a modification of the chalumeau and has since evolved into its current form.