Next to the classical guitar repertoire and the classical Indian music tradition I often feel most touched by all kinds of "simple" folk music from all around the world. There is just some truth to it which seems to speak to people in a raw and direct way, no matter what background they have.
Sometimes less is more! 
Another way to come back to less, is going to nature with an empty mind. Just sit and listen... you might hear the pure melodies of creation!