Thank you David for listening and your nice comments.
David wrote <"I can marginally play piano, and my fingers start balking at tempos over 120 bpm">
You should persevere David ; I actually think it is easier to play fast rather than slow . Not as much air to fill.
David wrote <" You did your grandmother proud!">
That's lovely David , thank you. My hipster granny has long been pushing the clouds around but she did leave me with an appreciation of fine music ; such as found on this forum

cheers
Gary.