I would really recommend this one to anyone that is using didgeridoo for sound healing purposes. This registered in C at 432 frequency. If you don’t know much about this tuning you should look up some of the literature on it. It also has such nice bright overtones that registered right in key as well. This one has a ton of volume and nice bass tones with its open bore. The great amount of back pressure makes circular breathing a cinch and the vocals are tremendous.