calliope

Instrument with stopped flute-type brass (usually) pipes voiced on high pressure and intended for outdoor use. Barrel-operated steam calliopes, mostly made during the 19th century, used steam to blow the pipes. Most 20th century calliopes (such as the Tangley Calliaphone) are air-operated (via a pump or blower) and are properly called air calliopes. These instruments were mainly used in America.