One thing, often overlooked for online lessons is that both the teacher and student need a copy of the same edition of the same music. But singers need still more.

You want to practise for your exam. You take out the CD from the envelope at the back of the book, but horror of horrors, it goes at the speed of light, and you can't keep up.

Necessity is the mother of invention. When the coronavirus struck, my private and school teaching evaporated. I know the government would have stepped it to supplement my income (eventually), but with a bit of effort, I am managing to stand on my own two feet. Actually it was a lot of effort.