A traditional indigenous Australian instrument (Aboriginal instrument).
It is a hollowed out tree branch often decorated with exquisite aboriginal art. Sound is produced when a digeridoo (also spelt dijerido) player presses the end of the instrument over his closed lips, the player then blows air through his lips producing a vibration, causing the sound.
In aboriginal culture women are not allowed to play the digeridoo. A skilled digeridoo player is usually a master of circular breathing, giving them the ability to continue playing the instrument without pausing for breath.