[Poothevokprot]

...another powerful tool is to immediately begin singing hu, a very powerful frequency through which you are singing a love song to the source of all that is... earlier today i was learning to sing with "vibrato", which isn't exactly natural for my voice - it breaks me out into giggles. so you can imagine i practice the hu with a quasi vibrato...

in any case, this reminds me of eckankar, a group devoted to this sound:
http://www.eckankar.org/hu.html