Is tuba a transposing instrument

Consequently, when its music is written in treble clef, the tuba is a transposing instrument, but not when the music is in bass clef. ... The CC tuba is used as an orchestral, and concert band instrument in the U.S., but BB♭ tubas are the contrabass tuba of choice in German, Austrian, and Russian orchestras.

1. Is tuba non-transposing?
2. What transposition is a tuba?
3. What key is a tuba in?
4. Which brass instruments are transposing?

Is tuba non-transposing?

The trumpet is a "transposing instrument". The following are NOT transposing instruments: Flute, oboe, bassoon. Trombone, tuba.

What transposition is a tuba?

Tubas and euphoniums may also be transposing instruments. Some tuba and euphonium parts are written as bass clef C parts (sometimes even when the instrument played is nominally not a "C instrument"). But in British-style brass bands, BBb and Eb tubas (called basses) are written in treble clef.

What key is a tuba in?

Usually, sheet music for brass instruments is written in the same key as the instrument itself. For the euphonium and tuba, however, music is written in the key of C, despite the instruments being in the key of B♭. This is based on orchestral conventions.

Which brass instruments are transposing?

List of transposing instruments