The sound of the didgeridoo shows a high representation of low frequencies, typically in the range of 50-200 Hz, which has a high physical impact on the listener and performer. The distribution of frequencies also contains not only harmonics going up to 1000 Hz but also extremely low frequencies way below the Alpha brainwaves, in the same area as the rhythms of drumming commonly used in shamanistic rituals of Aborigines and peoples all over the world, time-tested to help in inducing altered states of consciousness. This may help to explain why the didgeridoo many thousands of years ago found its way into Aboriginal shamanistic and healing practices. Read More
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