A tuba is a large brass musical instrument known for its deep, rich sound. It is the lowest-pitched instrument in the brass family and is commonly used in orchestras, concert bands, and brass ensembles. Tubas are typically made of brass and have a coiled shape, which helps to produce its distinctive tone. Players use a mouthpiece to create sound by buzzing their lips, and they can control pitch and volume by pressing valves. The tuba has several variations, including the BBb tuba, CC tuba, and Eb tuba, each differing in size and pitch. It is often featured in various music genres, from classical to jazz. The instrument plays a crucial role in providing harmonic support and rhythm, making it essential in many musical settings.