I’m not alone tonight.… The rehearsal hall was almost empty when Clara finished singing. She was a classically trained soprano in her early thirties, known among musicians for an almost unnerving precision. Her pitch was exact. Her breathing was controlled. Her diction was clear. Every crescendo arrived at precisely the right moment, every consonant belonged to the score, and even the difficult high notes seemed to require no visible effort. The conductor lowered his hands. For a moment, there was silence. Then the small audience applauded politely. Clara smiled and bowed. Afterward, an elderly man approached her. “Beautiful,” he said. “Thank you.” “I could hear every note.” Clara waited for the rest. But there was no rest. The man simply nodded and walked away. That night, Clara found herself thinking about his words. I could hear every note. Why did that sentence feel strangely empty? A few days later, she was invite...