This sounds strangely relaxing and it's a good use of traditional and cultural instruments. I'm not sure about the Djembe and Duduk but just for future reference, it's impossible for a didgeridoo to change pitch since it is basically just a wooden tube. With some modification by putting some holes in the tube you may be able to make it play more pitches but then it becomes a giant flute of sorts. Not judging you on this but I thought it might be some handy information in case you use a didgeridoo again. As for the Taiko, I'm pretty sure it's just a big drum so it's not easy to use it wrong.
It's nice to hear something from you after a while, just a little bit short though. But thanks for sharing this piece. ~Raymoclaus