Thanks, Dick. I realise, of course, that 2 of 3 notes are shared between a major & its relative minor — that indeed is why they are relatives; & so that fact also almost always provides a satisfactory harmony, as I say, without too much messing with the air button but using a smooth in-out action.

But what I also wonder, as I said, is whether this is common practice or an idea of my own — as I said, a lot of other anglo players have said they hadn't thought of that; or that they thought it was a bit eccentric. But I can't believe no-one else has thought of it to simplify. Obviously what I am talking of is using the anglo, as many do, as accompaniment for singing, often with the melody going with one hand and the harmony on the other - or even, sometimes, just using the chords in both hands: that is when this technique I am describing comes into its own. I have, obviouisly, asked other anglo players if they do it, often tho meeting the sort of blank looks I describe above.

Any other anglo·accompanists·to·singing out there who do it as well?