The BBb tuba is a large brass instrument known for its deep, rich sound. It is commonly used in orchestras, concert bands, and brass ensembles. The instrument is pitched in BBb, meaning it sounds two octaves lower than the written note. Typically made of brass, the BBb tuba has a wide bell and a long tubing that contributes to its unique tone. Players use a mouthpiece to produce sound by buzzing their lips. This tuba is often favored for its powerful presence in music and is essential in providing bass support in various musical settings.