The Piano Tuner Who Learned to Listen

In 1936, a young apprentice named William Braid White sat in a concert hall in Chicago, convinced the Steinway on stage was perfectly tuned. His mentor, an old German tuner named Klaus, shook his head. "Again," Klaus said. William struck the keys a second time. "I don't hear anything wrong." Klaus placed his hand on the boy's shoulder. "You are listening for the wrong notes.…