In my house at the moment I hear:
Chosen One vacuuming! Ah what a wonderful sound! AND
Rowdy One singing SOMETHING at the top of his lungs. It is a few words but lots of growls and yeah, yeah, yeahs.....who knows. That kid just likes to make noise and the later in the day it gets the ROWDIER he gets. It's bedtime and he is acting like he just ate breakfast and is ready to start his day.
Noise..................oh and the baseball game in the background of my typing.