Dijiridu

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The dijiridu (dijeridu, didgeridoo) is an aerophone or natural wooden trumpet, and its pulsing, low frequency sound has resulted in its also being called the "drone pipe." Aboriginals of Australia's North eastern Arnhem Land call the dijiridu the "yirdaki" (yidaki), whereas those of Western Arnhem land call it the "mago".

Like the oboe, the didgeridoo is played with continual vibration of the lips while using a special breathing technique called "circular breathing". In this four-stage technique, the player maintains the note by inhaling through the nose while using the cheeks as bellows.

Dijiridus are one to two meters in length, and the longer the instrument, the deeper the tone. Aboriginals accompany dijiridu music with rhythmic clicking of music sticks.