I've attached the TalkingTreeIntro in its own separate sequence. I've modified the way the faces worked from what Logan and I like my version better because it will scale onto your tree better if it doesn't exactly match Logan's tree size. What I did was breakout the eye and mouth into their own images and then I use On effect to paint the tree background.
To view my sequence you unzip this package and then change your xLights show directory over to the Christmas directory in this package. Then open the TalkingTreeIntro.xml. Render it and hit Play you will be able to see what it looks like. You could Import this sequence onto your own or you can copy/paste just the trees, stars, and timing tracks.
You also need to setup the singing face definitions on your tree model.