Larry -- My husband bought a Low D a few months ago and I attempted to play it and had the same experience of the being completely 'lost'-- I haven't come through the 'grief' process yet, though. . .

Alison -- Yes, please, I would love it if you sent me the GIFs you use! I downloaded the .ttf file that BAZ recommended and it's lovely -- but I still have to write in the notation over the music.

Thanks to everyone for their hints and suggestions and stories -- I'll keep you posted on the state of my hearing as the lessons progress.

-- Áine