Richard Wagner’s "Parsifal," his final opera, was created in parallel with his greatest creations including "The Ring" and "Tristan." It took him just over 30 years and several revisions before it was finally presented in 1882.
It is viewed as his most refined and elaborate work and it at times leaves people feeling that it is too profound to even applaud. In a comic twist, this bothered the composer; when Wagner would applaud a certain scene he would be hushed by members of the audience.