Question: Strahlen (Rays) for a percussionist (vibraphone and/or glockenspiel) and ten-channel sound recording is a composition by which German composer, widely acknowledged by critics as one of the most important ; but also controversial composers of the 20th and early 21st centuries?
Sentence (from "Karlheinz Stockhausen"): Karlheinz Stockhausen (] ; 22 August 1928 – 5 December 2007) was a German composer, widely acknowledged by critics as one of the most important (; ; ; ) but also controversial composers of the 20th and early 21st centuries.
Relevant evidence: Yes