Didgeridoo is a musical instrument that Aboriginal peoples of northern Australia play in their religious ceremonies. Most didgeridoos are about 5 feet (1.5 meters) long, but some are 10 to 15 feet (3 to 4.5 meters) long. They are made from straight, hollowed-out pieces of wood. Aboriginal musicians blow into these wooden pipes to produce a rhythmic, booming sound. In northwestern Australia, musicians place the end of the instrument in a hollow in the ground to add resonance.
