With increasing knowledge of how the genome works, many beliefs about ourselves will indeed have to be rethought. But the worst fears of the genophobes are misplaced. It is easy to exaggerate the significance of behavioural genetics for our lives.
So psychological engineering is more remote than the futurologists would have you believe. Though musical talent may be partly heritable, there is probably no single gene for musical talent that ambitious parents can have implanted into their unborn children. It might take hundreds or thousands of the right genes, with a different combination needed for each child.