When we sing songs with actions, Natalie likes to copy the actions. Sometimes, Natalie will even start the action of the song and wait expectantly for us to start singing to her. When we do start singing, she throws her head back and laughs. We are like puppets to her and it pleases her when her puppets do exactly as she commands.
Watch Video 132 of Natalie copying us when we sing "Twinkle Twinkle Little Star". She opens and closes her hands to represent the twinkling of the stars.