Salut für Johannes Aaron for violin, cello and piano (1997)
Schattenspiel for bass flute (1984)
Schegge for flute, clarinet and horn (1984)
Seconda sinfonia for orchestra (1981)
Sei bagatelle di fine estate for various groups of instruments from 1 to 11 players (1983)
Senza titolo for piano (1957)
Senza titolo for piano (1958)
Senza titolo for piano (1962)
Senza titolo (two pieces) for soprano and piano (1972)
Senza titolo for violin (1989)
(Senza titolo) for 3 b flat trumpets (1995)
Sette piccoli pezzi per flauto (1965-77)
Sinus, electronic music (1970)
Sisifo felice for 8 players (1985)
Sisyphos for 8 instruments (1984)
Sisyphos II for 14 instruments (1984)
Sisyphos III for narrator and ensemble (1988-89)
Sonata in due movimenti for clarinet and piano (1963-64)
Sonatina in stile classico for harpsichord (1959)
Song von der Krätze for voice and piano (1974)
Streik bei Mannesmann. Szenische Kantate for solos, choir and orchestra (1973)
Stufen, electronic music (1968-69)