I have all the respect in the world for Christian's reviews and, like Roger Ebert, he usually hits the nail on the head.
HOWEVER, Horner's score for Field of Dreams is easily on of his greatest efforts of his career, and remains to this day one of my all time favorite scores. From the first cue to the last you will hear some of the most haunting, uplifting, tearjerking music he has ever written (and he has written some amazing scores).
I am a Horner purist, and I am proud to say it. This score is amazing.