The B-flat trumpet is a brass instrument commonly used in various music genres, including classical, jazz, and marching bands. It is pitched in the key of B-flat, meaning that when a player plays a written C, the sound produced is a B-flat. This instrument typically has three valves that allow musicians to change the pitch by altering the length of the tubing. Made from brass, the B-flat trumpet has a bright, powerful sound and is known for its versatility. It is often featured in orchestras and ensembles, and famous players include Louis Armstrong and Miles Davis. The instrument is essential for both solo performances and group settings.