Delusion of the Fury is a stage play by the American composer Harry Partch. The first draft for a new theater work for singers, mimes, dancers, and musicians, Cry from Another Darkness, was completed by Partch on December 30, 1964, and the second draft, dated January 17, 1965, was a fuller, longer, re-titled Delusion of the Fury. The work was originally conceived as a play in two acts, with a dramatic first act and a comedic second. Partch completed writing of the music on March 17, 1966. The piece employs Partch's original system of micro-tonality, and was written for the largest assembly of his custom-made instruments used in any of his works. The instruments were an important part of the stage set.Delusion of the Fury was premiered at the UCLA Playhouse on January 9, 1969, where it was recorded for Columbia Records. This remained the only performance of the piece until it was re-staged in 2007 by the Japan Society in New York. In 2013 the piece was staged for the first time in Europe at Ruhrtriennale by Ensemble MusikFabrik under the direction of Heiner Goebbels. This production toured to the Edinburgh International Festival in 2014. It received another performance in Paris as part of IRCAM's ManiFeste festival in the Grande Salle of La Villette on June 18, 2016.
Act I is based on the Japanese Noh drama Atsumori, which tells the story of a warrior who has been slain in battle. The one who killed the warrior has traveled in remorse to the scene of the murder, so that he may repent. The dead warrior reappears as a ghost to the man. Then his son enters, searching in the belief that he may see a vision of his deceased father. The ghost-father is filled with resentment and lives again through the ordeal of the battle of his death. Eventually, faced with the uselessness of his anger, he seeks reconciliation with both his son and the slayer.
Act II is based on an Ethiopian folk tale, "Justice". The story is as follows: a young man is preparing a meal over a fire when an old goatherder approaches, searching for a lost kid. She asks the man if he has seen the kid. The man is deaf, does not understand the question, and subsequently gestures the old woman away. She misunderstands this as direction towards the location of the lost kid, wanders off, and finds it, and returns to offer thanks. Upon her return, the man grows angry and belligerent for being disturbed a second time, and a crowd gathers. The villagers force the two to consult with the Justice of the Peace, who is both deaf and myopic. In yet another misunderstanding, the judge takes the quarrel as a marital dispute, and orders the two to go home together with their 'child'.