quote

"In simple terms, a triangle may give you a major chord or a minor chord"

But....

Depending on what key you are playing in (and this is what I mean about the basic 'Home Keys' of the McCann!), aren't some of those 'Minor Triads' just exactly the related ones you 'need' anyway?

unquote

What complete bollocks. I've been playing the triangle for years and have never had more than a single note out of it.