The didgeridoo is an ancient wind instrument developed by Indigenous Australians. It is a long, hollow tube made from a eucalyptus branch that has been naturally hollowed out by termites. The player produces a low-frequency drone by vibrating their lips against the mouthpiece. A hallmark of didgeridoo playing is 'circular breathing'—the ability to inhale through the nose while simultaneously pushing air out of the mouth using the cheeks. This allows for a continuous sound that can last for hours. Players also use their voices to create overtones and mimic the sounds of nature, such as kookaburras or dingoes. The didgeridoo is not just an instrument but a sacred object used in ceremonies to connect with the 'Dreamtime.' While traditionally played only by men in some regions, it has become a global instrument used in ambient, world, and even techno music for its unique rhythmic and meditative qualities.