- Canto di Spettro (1983)solo cello, flute, oboe, clarinet, bassoon, horn, trumpet, trombone, percussion, 2 violins, viola, cello and double bass
- Cantorum Vitae (1980-81)flute, 2 pianos, percussion, cello and fixed medium
- Cantus ad ventum (1995), 30:005 early music voices, 3 mixed chorus, 4 hot air balloons
- Cantus arborescens (2009), 5:00voice, clarinet, piano and 2 percussions
- Cantus sacri (1986)chorus
- Corpus, 4:00
- Dum esset rex, 3:00
- O quam suavis est, 4:00
- The Capacity of Calm Endurance (1990), 4:09
- La capra che suona (1985), 8:0010 saxophones
- cello
- Capriccio sopra mi (1981-82)viola, cello and double bass
- Caprine (1954)
- Car tu es la vérité (2009)
- Carmen (1875)
- Carmen (1875)Arr. Rodney Sharman, 1993 [original work]
- Carmen Fantasy, op 25 (1883)
- Arr. Alexandre Guilmant
- Carnet de voyage (2009)dizi, pipa, orchestra and processing
- Caroms (Carambolages) (1966)flute (alto flute), bass clarinet, trumpet, piano (celesta), percussion and double bass
- Carrousel (2013), 10:003 percussions and piano
- Carrousel (1978), 6:00four or five ondes Martenot and vibraphone ad libitum
- La cartographie des sons (2019), 12:00kanun and string orchestra
- Casa da Música — Porto (2009), 1:00piano, fixed medium and video
- La Casa Declivia, 30:00tape recorder and processing
- Cat O’Nine Tails (1988), 14:00string quartet
- Catacombs (2000), 19:00flute and orchestra
- Catalogue de bombes occidentales (2000), 18:00soprano and small ensemble
- Catalogue d’oiseaux (1958)piano
- La rousserolle effarvatte (1956-58)
- Catalyst (2015)piano