My doctorate is in musicology; perhaps I can apply for the new opening.
My daughter has a doctorate in musicology, and there's very little she can't either do or learn to do.
I do not see an education in music composition as disqualifying, per se. I would be more curious about her background and work experience. If she's old enough to retire, when she started her career there were very few, if any, computer science majors offered, and probably no IT security majors.
Do you know anything about computer security?
Aaaah, forget I asked. It wasn't necessary for the last holder of the position.