The New Student's Reference Work/Cornet

Cor′net, a musical instrument, usually of brass and originally curved like a horn. The best form is known as the cornet-à-pistons, because changes of sound are made by manipulating pistons with the fingers. It has a compass of two octaves and two notes. It is not an instrument of especially fine or delicate sound; but in orchestras, in company with other instruments, its effect is excellent.