The usual mantra (is that redundant?) here...busy as always.
So, I'm linking to back to a very early post and one of my favorites. It's a video of Zander, almost three years old, performing at the Spring program for his then daycare/school. (The video was posted in August of 2007, but the event was in June 2007.)
His performance exemplifies so much of his personality. I imagine the music teacher said, "open your mouths and clearly say the words," or something to that effect. You can just see Zander trying to follow the directions perfectly.
P.S. And if you want to go even farther back in time, see the video in this post of Zander singing "Take Me Out to the Ballgame" in October of 2006 (at about 2.5 years old).