I have never been a part of rap culture, so maybe I just can't relate, but I can't imagine why it would matter. Creating songs, has never been exclusively a male trait that I am aware of. Guys usually only care of the woman beats him at things like sports, because he gets insecure. Being good at sports is a way a guy can stand out to women as a man, so that he can attract a mate. That is why it tends to be a bigger blow to his ego when the woman beats him at sports. Most guys grow out of this, but at your age I think you should be fine, as long as you aren't doing things like beating him at arm wrestling.