The bombard is an instrument that has been in constant evolution, with many different keys developed as well as milder versions in lower ranges (lombarde, piston) developed for use in mixed ensembles.
The bombard is an instrument as well as milder versions in lower ranges (lombarde) developed for use in mixed ensembles. This instrument has been in constant evolution. This was with many different keys. These many different keys are developed. Lombarde is piston.