Tune the orchestra
From Create Your Own Story
You point to your principal oboe Liang Wang and ask him for a couple dozen A's because one of the damn trombones can never get in tune. However, when Liang puts his oboe to his mouth, an awful screech comes out that sounds like a cow giving birth to a whale-elephant hybrid that is 3 days overdue. He tries again, but the same awful noise persists.
What do you do?