When I hear the term musically gifted, I don't think of the science behind it, I think that they are implying that the person they are directing the words at is someone that is very good at music, so much so that they stand out from the others at their age. The perfect example I have is one of my dads, friends kid. He can play, really well, 17 different instruments, then along with that, he can play almost any song on those 17 instruments after hearing it once. It sounds insanely improbable and that I am making this up, does it not? Well, the reality is, that he can. He is now 19, I believe, and even if he was in his 80's and had been a musician his whole life that would still be something hard to be able to do.