Jerico walls

In the car this morning, Amy was loudly blowing on her imaginary trumpet. The noise was truly getting a bit out of hand.
"Amy," I cried, "What's all the noise about?"
She paused momentarily.
"I'm working on getting the walls to fall down! TOOOTOOOOOOOOOOO."
Me: "Huh?"
"Yeah, mommy, the walls. You know, they didn't fall down until they made a REALLY LOUD NOISE."