Every time I hear the name Harold Budd, my mind starts playing the dreamy Major 7 themed song “The Plateaux Of Mirror” that he wrote and recorded with Brian Eno. That album (with the same name) remains an all time favorite. He sometimes gets lumped into the ‘new age’ category, but if pressed to use a category, I would suggest using ‘ambient’ or ‘landscape’ music.
Here’s a recent interview with Harold Budd where he claims “I’m So Minimal, I’m Not Even Minimalist!“:
http://thequietus.com/articles/14204-harold-budd-interview