- 2 erhu, 2 zhonghu and orchestra
- string quartet and oboe
- In the Timeless Air (2006)
- In the Wake (1985, 88)flute, piano and cello
- In Thy Beauty (1994)
- In Vain (2000), 71:00flute, bass flute, oboe, 2 clarinets, saxophone (tenor and soprano), bassoon, 2 horns in
F , 2 trombones, percussion, harp, piano, accordion, 3 violins, 2 violas, 2 cellos and double bass - Inachèvements (2014), 4:00viola and cello
- Inaktelki nóták (1953)
- Incandescence, op 29 (1982)piano
- Incantation (2011), 15:004 “trompes-sax”
- Incantation (2015), 6:242 Inuit throat singers, experimental throat singer and jazz, kaval (or flute), cello, percussion, oud and processing
- saxophone quartet
- Incantations III (1984)3 flutes (piccolos), oboe (English horn), E-flat clarinet, B-flat clarinet, bass clarinet and bassoon (double bassoon)
- Incantations V (Le Cercle Gnostique IXc) (1985), 21:00flute, clarinet, piano, violin, viola and cello
- Incantations Va (Le Cercle Gnostique IXd) (1985-86), 21:007 violins, 2 violas, 2 cellos and double bass
- Incipits (2003), 16:00flute, clarinet, violin, cello, piano and percussion
- Indécidable, indiscernable (2014), 11:00string quartet
- Indian Summer (1974)flute, piano, percussion, violin and double bass
- L’infiniment petit (2003)piano tuned in 16th tones
- L’Infinito (1994)12 mixed a capella voices
- Inflexions (2002)
- Inkblot I, 1:00pianoCycle: One Minute More
- Inner Time, op 42.2 (1983)solo clarinet and 4 satellite clarinets
- Inori no shishi (2010), 7:00taiko, chant and rin gong (on video fixed medium)
- Inside a native land (2002-04), 75:00trombone, 8 orchestral groups (17 total players, without conductor), live electronics
- audiovisual installationvideo
- Inside Passage (1999), 23:00piano and large ensemble
- performative and sound installation
- Insieme (2015), 16:00flute, clarinet, violin, viola, cello and piano
- L’instant d’avant (2004), 11:00piano, violin and cello
