A tuba is the lowest sounding instrument in the family of brass instruments and comes in many different shapes. Baritones, euphoniums and bass tubas are similarly shaped but differ in height and sound. The euphonium and the baritone are sometimes called tenor tubas so as to point out their higher pitched sound compared to that of a bass tuba, often simply referred to as a tuba. Though tubas are traditional brass instruments, you can also find high quality plastic models on the market these days. Don't forget to check out the many different brass instrument accessories and brass instrument stands available at Bax Music.