People who have perfect pitch say it's an advantage AND a drag.

If you saw a picasso's painting, except it was in red instead of blue, would you recognize it? Well, it would take you some time. Well, that's what happens to them, when they hear something in another key. I don't have perfect pitch, but that's what people who have it say about it. I teach a little girl who has perfect pitch, and she focuses more on the notes that are played than on the music.