Every trumpet player knows a great mute is going to make your playing sound stellar. But how do you choose the best mute for your type of playing? Let's look at what mutes are and the types that are available. Trumpet mutes are devices which are placed inside the instrument, or are hung or clipped on to the bell in order to alter the sound. They are made from copper, brass aluminum, plastic, wood and sometimes cardboard. There are three main types of trumpet mutes, the straight mute, the cup mute and the wa-wa branded as a Harmon mute. You will want to purchase one of each especially if you are going to be playing in a band or orchestra. But we will focus on the straight mute in this article.