I highly recommend reading violinist Hilary Hahn’s Slate piece about her two favorite music teachers — Klara Berkovich & Jascha Brodsky.
When Mr. Brodsky fell ill at 89, I visited him at a care center. Two nurses brought him to a large room, and he sat at a conference table. I assumed we were only there to chat, but I had my violin with me just in case. Sure enough, one of his first questions was, “Sweetheart, what did you bring to play for me today?” I reminded him of the repertoire I was working on, and he proceeded to give me a two-hour lesson. He leaned forward in his chair, singing examples, shaping my phrasing with interpretive gestures, and interrupting me to offer suggestions and corrections. For Mr. Brodsky, teaching was an unstoppable impulse.