 And they analyzed it. They have DNA. And it seems to suggest that the composer Ludwig von Beethoven had deafness because of lead poisoning. You can read his biography. It's amazing about Beethoven. He was deaf, couldn't hear anything, and could still compose symphonies. Is that genius or what? But it was lead poisoning. They have a lock of his hair that proves it. And he has a drinking problem, too. They said, well, you've heard of Beethoven's fifth. Okay.