I have discovered that Ellie loves it when I sing "jaunty" songs in 6/8 time. It gets her to smile and coo every time, even if she is crying or a little whiny. I sing to Ellie all of the time, and knew that she loved Jesus Wants Me For A Sunbeam. The other morning when I was getting her dressed, I tried Have You Done Any Good in the World Today, and it was such a hit that I dusted off every energetic 6/8 song I could think of (which was only Who's On The Lord's Side, Who?, and I Saw Three Ships Come Sailing In, for which I could not remember all of the words, so I had to make up some of my own). It is great to have these songs in my back pocket for when they are needed. I think it is the meter and the tone that Ellie likes the best.
Ellie has been kind of laughing for a week or so, and a couple of days ago I caught her first actual laugh on video! I am so happy that I just happened to be taping when it happened. It is a long clip, but if you fast forward to about 2 minutes and 10 seconds, you will hear it yourself!