Antikrist is an allegorical music drama with a religious moral and is about "our time", about the decadence, spiritual decay and destruction of Western civilization. The composer had written his own libretto - obscure, Biblical, expressionistic and to some extent grotesquely satirical. The work was the culmination of Langgaard's efforts so far, and large sections of both The Music of the Spheres and Symphony No. 6 form part of the opera's composite music, which can be said to have Richard Strauss as the stylistic common denominator. The Royal Theatre refused to perform the opera, and the first complete performance took place on Danish radio in 1980. Six years later there was a concert performance in Copenhagen and this was recorded, but it was not until 1999 that it was played on stage – in Innsbruck.

Piano reduction in Danish/English, German and French.