None. If I did, I'd be ashamed of them now. My understanding of making music has grown exponentially over the past 60 years.
The time with the talented soprano really must have been fun.
It was the first time I ever accompanied anyone. I asked her how quickly to play something, she sang a bar or two sotto voce, and I took it from there. I quickly learned that you have to breathe with your singer.
Incidentally, the lady became a TV star in Portland during the 1980s and then shifted to writing a thrice weekly column for the Portland Oregonian. When the newspaper's business model changed due to the Internet, they bought out her retirement benefits, and she retired a millionaire. She does the occasional improv and acts in local theater. Her daughter inherited her singing voice and is doing quite well as a vocalist.
Instead of music lessons I had dance lessons.
I can only dance the Uncoordinated Freestyle when I'm drunk.