My 3 year old sings perfectly in tune, and as far as I can remember always has. My just-turned-six year old occasionally hits the note but mostly doesn't, and can't repeat a sequence of even two notes that I sing to her. It doesn't MATTER, of course, but is she going to be the one the music teacher tells to mime? Has anyone had a tone-deaf 6 year old grow into being able to tell notes apart?