When I was a little boy, my mum was bent on yoga. It was the fashion then. I remember she wanted me to do some, because a friend of hers told her I should breathe with my mouth shut! I just wouldn’t do it (I do now!)
So we both did the yogic breathing.
Mum had this book, health with yoga by Selvarajan Yesudian ((I checked, it’s still on sale at Amazon in a new edition).Selv. described the “HA” breathing out. He said it was important to breathe out like this. He said that there were “secret” breathing to rejuvenate. I later discovered the short pulse ha breathing out, a series of ha, ha,ha,ha, until you hav breathed out completely.
But I didn’t pay much attention to this, as I thought it was an eccentric way of doing..
BUT with in my flute method by Trevor Wye, he explains that to do a vibrato, you start by doing a series of …ha,ha,ha! With the metronome at 60 beats per minute and increasing, so you can control this wave.
For the tonguing, which is not a rude gesture in flute technique, you also need to first do it not with the tongue, but with the abdominal muscles pushing air through the vocal chords to emit a ha sound! You have to practice so you can obain good, solid ha,ha,ha in an arpeggio, in a scale, even in the 24 keys of scales! Pff, pff! Only then, are you allowed to start sounding “tu” or “du” once your stomach muscles ar strengthened.
I can see that Yoga ha joins up with flute tonguing and vibrato altogether with ha,ha,
I can mentionthat it’s quite funny all these ha,ha,ha,ha!
The book reference on Amazon is