The first organ was built with the church, by from Giengen. The instrument took part in the Universal Exhibition in Antwerp in 1894, and was awarded a Medal of Honor. It was dismantled in World War I, and transferred to the Church of Ascension, Rue Dulong, in Paris in 1919. The project of a new organ was supported by Albert Schweitzer, but was interrupted by World War II. The present organ was built in 1964 by Detlef Kleuker from Bielefeld. It is modeled after German Baroque organs. Konrad Adenauer, the German Chancellor, supported its financing. Titular organists were (1964), Detlef Wieghorst (1965–1966), (1966–1967), Detlef Schmidt (1967–1968), Wolfgang Karius (1968–1970), Jean-Marc Pulvert (1971), Edgar Krapp (1971–1972), Annetta Schmid (1972–1974), (1974–1982), and since Helga Schauerte.