Musicians use a mute on brass instruments to alter their timbre. A mute can be inserted into the instrument’s bell, clipped, or held at the bore’s end. Generally, mutes soften lower notes because they reduce the bell’s opening. In contrast, they amplify high notes because of repetitive resonance within the bell and the mute. The oldest form of brass mute, the Baroque mute, was used to play music in small and intimate chambers. Other uses of this mute included; practice, funerals, and secret military retreats. Over the years, brass mutes have been developed to serve various purposes, including playing in some of the world’s legendary orchestras. Some practice mutes are so silent that you can barely hear the notes you play. Nonetheless, only the best trumpet practice mute will provide positive results.