Biography
| 1926 | Born July 1, Guetersloh, Westphalia, Germany | |
| 1942 | Studied at the Brunswick State Music School | |
| 1944 | Military service | |
| 1946 | Study at the Institute for Church Music in Heidelberg and with Wolfgang Fortner | |
| 1950 | Artistic director and conductor of the ballet of the Hessisches Staatstheater at Wiesbaden | |
| 1942 | Studied at the Brunswick State Music School | |
| 1944 | Military service | |
| 1946 | Study at the Institute for Church Music in Heidelberg and with Wolfgang Fortner | |
| 1951 | Boulevard Solitude (opera, libretto by Grete Weil) | |
| 1956-57 | Undine (ballet choreographed by Frederick Ashton) | |
| 1960-68 | Member of the West Berlin Akademie der Kunste | |
| 1961 | Elegy for Young Lovers (opera, libretto by W. H. Auden and Chester Kallmann) | |
| 1964-65 | The Bassarids (Music drama, text by W. H. Auden and Chester Kallman) | |
| 1968 | The Raft of the Medusa (oratorio) | |
| 1969 | Symphony No. 6 (for two orchestras) | |
| 1970 | El Cimarron ('recital' for four musicians) | |
| 1974-76 | We come to the River (Actions for Music by Edward Bond) | |
| 1976 | String Quartet No. 4 | |
| 1977 | Aria de la folia espanola (chamber orchestra) | |
| 1980-91 | Professor of composition at the Staatliche Hochschule fuer Musik in Cologne | |
| 1980-83 | The English Cat (opera, text by Edward Bond) | |
| 1983-84 | Symphony No. 7 (for large orchestra) | |
| 1981 | Claudio Monteverdi: Il ritorno d'Ulisse in patria | |
| 1990-91 | Requiem (for instruments, in memoriam Michael Vyner) | |
| 1992-93 | Symphony No. 8 (for large orchestra) | |
| 1995-97 | Symphony No. 9 (for chorus and orchestra, text by Hans-Ulrich Treichel) | |
| 1998-2000 | X. Sinfonie | |
| 2000 | Awarded the Praemium Imperiale Prize for Music, Japan Art Association, Tokyo |


