New Judge
I'm not going to argue the toss about Kate Bush's value to music, because music appreciation (as is the appreciation of all art) entirely subjective.
However, I challenge you to listen to This Woman's Work without being moved (it was used a couple of years ago on the NSPCC advert). It's an outstanding piece of music.
Also, I have to say (and I only found out this the other night, whilst watching a documentary about her), she wrote, 'The Man With The Child In His Eyes', when she was 15 years old.
Amazing.