I'm not sure if my wife has what you call perfect pitch but she can listen to a note on a trumpet and tell you what it is. I can come close but she is always right on and she can't understand how I can hear a note and not be able to tell if it is a Ab or an A just by listening to it. She gets real frustated with people that play out of tune and can't tell they are off. I used to sit next to one of the better players in town and he always said I was right on. With out thinking or trying I always play with my ear and lip my pitches unconsciously.