I know not what. But think i’ll stick to my saxophone. Once i saw a fella lying down on the piano with his ear on the keys. On asking him, he replied that it was the best way to learn to play by ears! lol
Says Wikipedia, ‘The cimbasso is a low brass instrument that developed from the upright serpent over the course of the 19th century in Italian opera orchestras, to cover the same range as a tuba or contrabass trombone’.