The Sweet Sound of Silence

Xander and Liam are in the tub as I am typing it. No worries, Ray is up there too.

Xander was half humming, half singing one of his crazy preschooler tunes and I said to him: "Xander, please. Mommy doesn't want to hear that one." (It's mostly the sticky, sticky bubble gum tune I posted in December.)
Xander replies cheerily with: "Okay, what do you want to hear?"
Me, with a sigh: "The sweet sound of silence."
Xander: "I don't know the words to that one."