Yidaki' or didgeridoo is one of the oldest wind instruments in the world. Djalu Gurruwiwi is a full blood Aboriginal Elder from Gove in the North East Arnhem Land and is the spiritual guardian of this ancient musical instrument. The yidaki is used for sacred Aboriginal Corroboree's and is only played by men. Djalu passes his knowledge down to his son and grandsons, explaining the fundamentals of the required techniques used in finding, making and playing the yidaki. Over half a million yidakis or didgeridoos are sold each year with no information of their historical importance. It is Djalu's responsibility as the custodian of the yidaki that he ensures that the education is passed onto the wider community and is maintained for the next generations. Jack Thompson eloquently narrates this engaging and beautifully filmed documentary.