Thread drift: I have my Windows colour preferences set so that my blue clicky things are in fact green, and after use, a lovely purple. It's okay though: being left-handed I have plenty of experience in adapting instructions.

Back to the subject of music teacing tips: I expect to be using the NNS for my new piano student to refresh his 30-year-old knowledge of theory.

Peter T., about the matter of what note is what number in which key, I might have my student do up a chart as homework. We can fix up any goofs and then he'll have it for reference.