Yea, I think a pattern that modulates between two vowels works best, like OoohWaaaOoohm. I think you find this in many religions, for example the call to prayer

Yea, I think a pattern that modulates between two vowels works best, like OoohWaaaOoohm. I think you find this in many religions, for example the call to prayer, but I don't want to be shouting Alla, neighbours will call the police for sure.