May 6, 1960:
Brabant, a song for voice and orchestra by Ton de Leeuw (33), to words of Laurey, is performed for the first time, in Breda.
October 7, 1962:
Ombres for orchestra by Ton de Leeuw (35) is performed for the first time, in the Concertgebouw, Amsterdam.
March 13, 1963:
Alceste, an opera by Ton de Leeuw (36) to his own words after Euripides, is performed for the first time, over the airwaves of Dutch television.
June 16, 1965:
The Dream, an opera by Ton de Leeuw (38) to his own words after a Chinese legend (tr. Henderson) is performed for the first time, in Stadsschouwburg, Amsterdam.
September 15, 1965:
The Bees, a ballet by Ton de Leeuw (38), is performed for the first time, in Arnhem.
May 16, 1966:
Syntaxis II for orchestra by Ton de Leeuw (39) is performed for the first time, in Utrecht.
June 26, 1967:
Spatial Music III for chamber orchestra by Ton de Leeuw (40) is performed for the first time, in Amsterdam.
July 5, 1968:
Haiku II for soprano and orchestra by Ton de Leeuw (41), to words of various authors, is performed for the first time, in Rotterdam.
June 14, 1969:
Lamento pacis I for chorus and orchestra by Ton de Leeuw (42) to words of Erasmus, is performed for the first time, in Amsterdam.
January 24, 1971:
Music for the television play Litany for Our Time by Ton de Leeuw (44) for soprano, chorus, flute, harp, piano, double bass, percussion, tape, and electronics, is performed for the first time.
July 8, 1971:
Music for Strings by Ton de Leeuw (44) is performed for the first time, in The Hague.
October 11, 1975:
Gending for gamelan orchestra by Ton de Leeuw (48) is performed for the first time, in Hilversum.
January 9, 1986:
Résonances for orchestra by Ton de Leeuw (59) is performed for the first time, in the Concertgebouw, Amsterdam.
November 15, 1986:
Transparence for chorus and brass by Ton de Leeuw (59) to words of various authors, is performed for the first time, in Amsterdam.
June 25, 1993:
Antigone, a music drama by Ton de Leeuw (66) to his own words after Sophocles, is performed for the first time, in the Westergasfabriek, Amsterdam.
October 2, 1993:
A cette heure du jour for chorus by Ton de Leeuw (66) to words of Selk, is performed for the first time, in Maastricht.
June 13, 1996:
Three Shakespeare Songs for mezzo-soprano and chamber ensemble by Ton de Leeuw (†0) is performed for the first time, in the Concertgebouw, Amsterdam.