Berkeleysider Diana Howard was walking home from the Y yesterday on Ohlone Greenway when she spotted this “plein air” French horn player running through some tunes.

“It was near Hearst and McGee,” says Howard, a designer who keeps a notebook on her at all times for just such an opportunity to sketch on the hoof. “I’ve seen him before. He was just practicing. Some grandparents and their charges hung around to listen.”

Tracey Taylor is co-founder of Berkeleyside and co-founder and editorial director of Cityside, the nonprofit parent to Berkeleyside and The Oaklandside. Before launching Berkeleyside, Tracey wrote for...