I truly believe in the nurture of a mother's love. I believe our children are steered in the right direction by us, their parents. I do not believe that a child would be good at music unless they were steered towards it by someone, whether it be a teacher in school or a parent or any other person. Did your parents steer you towards music, were they good at music and wanted you to also have that talent? I have 3 DE children and my first donor was very intelligent with a doctorate degree, my second donor was not so intelligent but had the personality I wanted. I don't see any difference in their intelligence levels but it is me, their mother, who has nurtured them to eat, walk, talk, read and who will hopefully steer them in the right directions in the future.
I'm not saying you shouldn't look for what you really want in a donor, I'm just saying that nothing is guaranteed. Your biological child may decide not to follow your footsteps in music whereas a DE one may and vice versa.
Good luck in finding the right donor and I hope you will very soon have your dreams fulfilled.