- Layers (2015), 5:00 – 8:003 percussionists (tabla, changgu, riqq) and double bass
- … le mien est un cri, … (2015)
- «… le sifflement des vents porteurs de l’amour» (1971), 13:00flute and percussion
- Learning (1976), 20:004 violins, percussion (claves and Balinese gong) and fixed medium
- Leçon de choses (1993), 12:00small ensemble and processing
- Leçons du Tao (2005), 9:006 female voices and clarinet
- Lefting, 1:00pianoCycle: One Minute More
- Lehra Alphabet (2014), 15:00tabla and ensemble
- Lent chagrin (2003), 2:00soprano and piano
- Leopardi Fragments (1961)soprano, contralto, flute (piccolo), oboe, clarinet, bassoon, trumpet, trombone, harp and cello
- Lepidoptera, op 62 (2002), 12:00piano
- «Les Dissonnances» (1785)Arr. Geoffrey Emerson
- Let Go of Control, 2:00Cycle: 2 Minutes From Home
- Let Them Not Say (2021), 8:008 spatialized singers or mixed choir (SSAATTBB)
- interactive sound installation
- chorus and small ensemble
- Letters to God (1985), 7:00children’s chorus, marimba and sanukite
- Lettre à un ami (1986), 15:00solo English horn, flute (piccolo), Yamaha DX-7 synthetizer, piano, percussion, violin and cello
- Lettre de Roxana à Décébal (1987)orchestra
- Lettre d’Étienne à Jacques (1983), 20:00orchestra
- Lettre posthume de Conrad (2000), 27:00chamber orchestra
- soprano, oboe, clarinet, bassoon, trumpet, trombone, percussion and viola
- Levées (2009), 10:29saxophone quartet
- Lezginka (La Lesghienne), 1:00pianoCycle: One Minute More
- Libra (1968)flute, clarinet, guitar, piano, percussion and violin
- Licht, Nr 47-80 [Light] (1977-2003), 1740:00
- Licks & Brains I (1987-88)saxophone quartet
- Licks & Brains II (1987-88)saxophone quartet and 28 musicians
