Music: The Met's Young Master

The aisle door opened quietly. A large man padded gracefully in and paused behind the standees at the rear of the orchestra floor. He peered intently at the stage and listened. His blue shirt was open at the neck, and over it he wore a bright red cardigan. He could have been a stagehand out for a stroll. Instead, James Levine, the new music director of the Metropolitan Opera, was making his rounds. It was the season's last performance of The Barber of Seville. Levine had seen and heard it countless times before....