Mrs. B: Look! There's an interesting word in this sentence--cacophony. Does anyone know what "cacophony" means?

(complete silence)

Mrs. B: Okay, I'll give you a hint. When I was little, sometimes I would turn up the volume on my record player and my mom would say, "Turn down all that cacophony!"

Lizbeth: Record player? Oh, man! How old ARE you?