Check out the “Let it Snow” Xmas 2020 Group youtube project!”
@Mouse It sounds like you are really coming along on your ear. My teacher had me get an A tuning fork so that I can tune my cello every lesson. She has me use the A harmonic on the A string against the fork. Then the harmonic on the A string vs D string, D string vs G string and so on. It is subtle so trains my ear. Some days my ability to properly and consistently produce a good ringing harmonic sucks, but it is a great exercise.
Anyways, we should have a few cello videos on here, I think.