What is the lowest brass instrument?
Pitch of brass instruments
{'answer_start': array([-1]), 'answer_text': array([''], dtype=object)}
The modern bass trombone is the same length as a tenor trombone, but typically has two valves, one pitched in F and one in G♭. When combined, these valves put the instrument into D. Modern contrabass trombones are constructed in F and B♭. The F contrabass trombone is often fitted with a valve that puts it into D, and a valve that puts it into E♭, and when combined, these put the instrument into the key of B♭. The B♭ contrabass is often fitted with a valve in F and has been fitted with both a valve in F and G♭, so that it matches its bass trombone counterpart, but is pitched an octave lower.