There is not the slightest doubt in my mind that Karlheinz Stockhausen was one of the most creative minds in the 20th century. His music is an endless ocean of new sounds and revolutionary ideas. There is a vast amount of his music on you tube, most notably many excerpts from his opera ”Licht”, the most monumental experiment in that genre with a duration of altogether 29 hours. Here are two excerpts  from this Mount Everest of an opera: from  ”Freitag”  the magical ‘Freitag’s Gruss’ followed by ”Strahlen” ( ‘Sonntag’ ).