Ella's New Sound

My very vocal child has been practicing new sounds. Unfortunately her newest is a screech that she varies in pitch and volume. It sounds a bit like fussing but it's not. She things it's the best thing ever and has this proud expression after she makes it. It's something she does while watching her mobile, playing with her Exersauser's phone, pressing buttons on her turtle, and just about any time it strikes her fancy. I'm thinking of investing in some high quality ear plugs.