The other day, a friend asked me if orchestral musicians really look at the conductor when they’re playing. It’s an interesting question, because after all, how can you look at your music and play all the right notes if you’re also looking up at the person waving the baton? The answer is that you do both, but not always in the same proportion and not always at the same time. There are times—the beginnings of pieces, for example, or at other times when the music starts or stops, or when the tempo