CSO Concertmaster Robert Chen performs and guides listeners through his interpretation of the famous violin solo from Strauss’ Ein Heldenleben. “It’s very important to be prepared technically to play this piece, but I think the technical and the expression, they go hand in hand,” Chen said. “What I’m doing technically is coming up with certain ways to express in sound the character. To get at a character, I think it’s about having a concept of how you want something to sound and really going after it.”