- Always Quiet (2020), 2:00Cycle: 2 Minutes From Home
- AMA Lga (2022), 7:45stereo fixed medium
- keyboards, synthesizers and prepared drum kit
- Amali (2003), 6:02nay, oud, percussion and string quintet
- Ambient V (1995), 10:002 violins
- L’améga gap gareg huragam pavaag (2008), 35:18mezzo-soprano, processing, film and lights
- Amerika (2001), 13:00flute, oboe, clarinet, horn, trumpet, trombone, 2 percussions, piano and string quartet
- L’Amérique d’après Tiepolo (2016)chorus and small ensemble
- Amers (1972-73)flute, oboe, 3 clarinets, bassoon, horn, trumpet, trombone, harp, celesta, 2 percussions, 2 violins, viola, cello and double bass
- Amnesia (1993)flute (alto flute), clarinet (bass clarinet), piano, percussion, violin, viola and cello
- Amon-Râ (1980)5 ondes Martenot
- Among the Great (2009), 4:33nay, oud, percussion and string quintet
- Among the Tarnished Stars (1998)clarinet, violin, cello and piano
- Amour, Nr 44 1/2 (1976-81)flute
- L’Amour Inaccessible [Unattainable Love], 5:42
- L’amoureuse (2010)
- Amuya (1968), 17:00flute (piccolo), oboe, clarinet, bassoon, horn, trumpet, trombone, percussion, piano, harp, celesta, violins, viola and cello
- An Example of Making Anything Signify Anything (2011), 10:00piano
- An Index of Metals (2003)
- An Tasten (1977)piano
- Anagramme (1981)piano
- Anahit (1965)2 flutes (flute in
G ), 2 clarinets, bass clarinet, tenor saxophone, English horn, 2 horns, trumpet, 2 trombones, violin, 2 violas, 2 cellos and 2 double basses - Anaktoria (1969), 12:00clarinet, bassoon, horn, 2 violins, viola, cello and double bass
- Anaphora (1970), 7:30flute, clarinet, bassoon, violin, viola, cello and piano
- Anaphora II (1971, 72), 6:00piano
- Anatomie (1996), 60:00incidental music
- Anatomie d’un souffle (2016)organ
- Ancient Voices of Children (1970)children voice, soprano, oboe, mandolin, harp, electric piano (toy piano) and percussion
