The music of Klaus Lang is a wonderful example of the fruitful coexistence of objectivity and mysticism, of concept and image, of planning and hoping, of thought and experience. The things about which one can speak and write in Lang’s work are the countable things and the forms they take; structures and systems. Within his music we find an approach similar to medieval times, when composing enjoyed the reputation of being a science.

(Raoul Mörchen)