«The good thing about Stockhausen is that he did it all. Not only was he further ahead than anyone else, he was also better than anyone else. Aus den Sieben Tagen is a big classic, yet rarely performed. “Classical” musicians despise it because a huge part involves improvisation, and improvisers do not consider it because it is “signed” music. What a regrettable mistake do all these people make. It is precisely during these few days when Stockhausen composed this collection, that he had placed the highest faith into musicians, and, through a metonymic extend, into humanity. At this peak point, the last piece of the book states “Play, you do not need me anymore, everything you will do from now on will be right and good.” Yet, the mistake will not be undone as “classical musicians” are too anxious to be abandoned by the composer, and improvisers cannot bear interference in their musical ideas».