I didn't misunderstand you, Artful Codger, I was making a pro forma acknowledgement of you post so that it wouldn't appear that I was disputing your comments. Which I don't .

In fact, your comments focus on the vocal skills required for good harmony singing, one of at least three independent skills that need to be developed to answer this question.

This is one of those questions like, "I'd like to sit down at a party and play the piano, how do it do it?" Or, "I've never had any experience with this sort of thing, but how do I write, direct, and produce my own movie?" or maybe even, "I need to become Governor of my state, fast! Any ideas?"