When did your children start being able to sing with actual pitch?

My daughter's nearing 3 with excellent vocabulary and pronunciation, but she still sings everything in relatively the same tone. It sounds flat and not musical at all. There are videos on youtube of children younger than her singing with perfect pitch. When is this ability normally expected to develop? At 3, is this an indication of having a poor ear for music, or are the younger children online extra-special in this sense? What was your experience with your little ones, and/or do you know some scientific information on this topic? via /r/Parenting http://ift.tt/2nUIv5X