What is the bocal on a bassoon?

The bocal on a bassoon is a metal tube that connects the instrument's reed to the body. It plays a crucial role in shaping the instrument's sound by allowing the musician to adjust the pitch and tonal quality. Typically made of brass or nickel, the bocal comes in various lengths and can affect the overall tuning and response of the bassoon. Musicians often choose specific bocals to suit their playing style and preferences.