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Didgeridoo - Wikipedia
How Do You Didgeridoo? | Science | AAAS
Didgeridoo players use a technique called 'circular breathing' that allows them to play continuously. Air stored in the cheeks is expelled whilst simultaneously breathing in through the nose. : r/interestingasfuck
Core group keeps didgeridoos humming in Sonoma County
What is a didgeridoo (the droning Aboriginal Australian wind instrument)?