@@edgewind Well... here's the thing... it is a system in whole. The tonguing we usually think about when we say tonguing is front of the tongue. In higher level didgeridoo playing it is more the back of the tongue that creates quality of sound, thickness of it and overall clarity. Because back of the tongue determines air volume inside the mouth and also pressure as volume is related to pressure. But pressure is also related to elasticity of the tissue that surrounds it, for example lips, but also tongue itself. So the lips and the tongue work in a symbiotic relationship exchanging the highly pressured packages of tongue in this convolution which borrows its begining from a five phase tongue articulation that is more difficult to do at this speed. The conv itself is relatively easy, but when surrounded with other sounds, it becomes more difficult and, even more, makes other sounds more difficult. The SDS breath soft toot is already something that has depth of practice that can take years before even approaching any "perfection". All in all, the tonguing that seems to catch attention is a more achievable part of the whole story...