The comments are all relevant. It doesn’t matter what the subject is (unless offensive ) if it is well written and compelling, and most importantly presents you as a great addition to the school. It’s harder to do this when you pick a subject that is used a lot.
One of my kids auditioned for college programs. Had to sing some songs. It was a cardinal rule, NOT to pick a popular or notable piece because its difficult to excel when so many have already taken a shot at it, or it’s a signature piece that’s well known. You have to really make it your own, put a fresh face on it and do it very well or it’s boring.,anemic , even painful.
That’s not to say you can’t do an excellent job going this route. It’s just more challenging and there are more landmines to avoid.