The CC tuba is a type of tuba that is pitched in the key of C. It is commonly used in orchestras and concert bands due to its rich, deep sound and versatility. The CC tuba typically has a larger bore and a longer tubing length, which contributes to its powerful tone and projection. Musicians often choose the CC tuba for its ability to play a wide range of musical styles, from classical to jazz. It is one of the most popular tubas among professional players, including those in orchestras and brass ensembles. The instrument is known for its clear articulation and strong low register.