The Eb tubas sound 1 octave+a 6th below the written note while the Bb tubas sound 2 octaves lower than written. The Bb tubas are technically BBb (double-Bb) tubas. The F Tuba is a smaller, lighter instrument primarily used for solos. read more
Range The range of the euphonium is E2-D5 as follows: Note that, although euphonium and bass tuba are pitched in Bb, they are notated in C at the desired pitch. read more
The "Small Swiss Tuba in C" is a tenor tuba pitched in C, and provided with 6 valves to make the lower notes in the orchestral repertoire possible. The French C tuba was the standard instrument in French orchestras until overtaken by F and C tubas since the Second World War. read more