Notes about the video:

"This exercise is taken directly from lessons I had with Zara Nelsova, one of the greatest cellists I ever heard. This was a cornerstone of her approach and an exercise she adapted from her father, a flute player, who practiced "long tones" often. He evidently thought that if it was good for a flute player it would also be good for a string player--I think he was right!"

"Try and keep a relaxed left hand while you're doing this series of exercises. It's a good time to check out the way stress on one hand can effect the other. See if you can adopt a strategy to deal with this phenomenon."

--Erik Friedlander