The tuba, the largest and lowest-pitched brass instrument, provides foundational bass in concert bands, orchestras, and brass ensembles. First introduced in the 19th century, it has since become an essential part of symphonic and marching performances. Notable models include the Miraphone 186, Yamaha YBB-641, Conn 52J, and Besson 981. Tubas are used to establish harmonic foundations and drive rhythm in various musical settings.