Johannes Wolfgang Zender (22 November 1936 – 22 October 2019) was a German conductor and composer. He was the chief conductor of several opera houses, and his compositions, many of them vocal music, have been performed at international festivals. As a conductor, he worked at the Theater Freiburg, Theater Bonn, Opernhaus Kiel and Hamburg State Opera, and led the radio orchestra Deutsche Radio Philharmonie Saarbrücken Kaiserslautern. He taught at the Musikhochschule Frankfurt. His opera Stephen Climax premiered in 1986 at the Oper Frankfurt, and his third opera, Chief Joseph, premiered in 2005 at the Staatsoper Unter den Linden. Career Born in Wiesbaden, Zender attended the Maifestspiele at age 13, listening to concerts conducted by Carl Schuricht, Karl Böhm and Günter Wand, among others. He took piano lessons and learned to play the organ. From 1949, he went each year to the Darmstädter Ferienkurse, where he got to know trends in new music by Karlheinz Stockhausen, Olivier Messiaen and John Cage. He studied piano, conducting, and composition (the latter with Wolfgang Fortner) at the Hochschule für Musik Frankfurt and the Hochschule für Musik Freiburg from 1956 to 1959. He was trained as a concert pianist by Edith Picht-Axenfeld. From 1959 to 1963 Zender was Kapellmeister of the Theater Freiburg, then principal conductor at the Theater Bonn from 1964 to 1968. In 1964–65 he attended the Second Cologne Courses for New Music at the Rheinische Musikhochschule, under the artistic direction of Stockhausen. In 1968 he was called to Kiel, where he was Generalmusikdirektor (GMD) of the Opernhaus Kiel until 1972. From 1971, he also was principal conductor of the Radio Symphony Orchestra in Saarbrücken. In 1984, Zender became head of the Hamburg State Opera and GMD of the orchestra there. From 1987 to 1990, he was chief conductor of the Chamber Orchestra of Radio Netherlands in Hilversum. From 1999 to 2011, he was the permanent guest conductor and a member of the artistic board of the SWR Symphony Orchestra Baden-Baden and Freiburg, now part of the SWR Symphonieorchester. Zender's opera Stephen Climax, with his own libretto based on James Joyce and Hugo Ball, was premiered on 15 June 1986 at the Oper Frankfurt, staged by Alfred Kirchner and conducted by Peter Hirsch. His third opera, Chief Joseph, based on Chief Joseph, was premiered in June 2005 at the Staatsoper Unter den Linden, staged by and conducted by Johannes Kalitzke. From 1988 until