Karlheinz Stockhausen was one of the leading lights of the mid-20th Century avant-garde, and he influenced many composers. “Yet today it is hard to find Stockhausen even on CD, let alone in performance. He has all but disappeared from view. Some of the reasons for this lie at his own door. Stockhausen now releases CDs on his own label, but makes it frustratingly difficult to buy them.” – The Guardian