@LDT - thank you for that. I've been slogging away on and off at the Pokerworkfor a couple of years, get a few more-or-less recognisable tunes out of it, just about use use more than one row at a time and get to use the basses a bit. Possibly nearly ready to begin actually learning properly. So maybe now worth my while to get a copy.
Do you, perchance, put stuff on YouTube from an expanded version of your initials?
And getting a back towards topic, I found a notable lifting of the spirits on actually beginning to get a bit by ear. A very big session in a festival marquee, so not at all exposed - melodeon players keeping a safe distance from each other - but good to do anything at all.