Ensemble
| Title | Date | Instrumentation | Duration | Audio | Programme Note |
| "Pentaprism" | 2022 | wind quintet (flute, oboe, clarinet, bassoon, horn) | 15' | ||
| "String Quartet VII" | 2021-2022 | 2 violins, viola, cello | 10' | ||
| "Microforms" | 2022 | flute(s) & piano | 15' | ||
| "Scintillae II" | 2021 | violin & piano | 14' | ||
| "Vayu-Vata" | 2020 | violin, cello, piano | 14' |  |
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| "Quartet VI" | 2016 | vl1+vl2+vla+vc | 16'30'' | |
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| "Siberia - String Quartet V" | 2014 | Sopr+vl1+vl2+vla+vc | 21' | |
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| "Quadripartita" | 2014 | vl+vla+vc+db | 16' | |
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| "Mystery of a Street" | 2011 | bscl+accordion+vc | 7' | |
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| "Ventalia" | 2007 | fl+afl+picc pf | 12' | |
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| "Marthiya" | 2005 | vn va vc |  |
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| "Ice Flowers" | 2004 | cl pf vn vc | 6' | |
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| "...a fire was in my head..." | 2002 | str [3.3.2.2.1] | 3' | ||
| "Bagatelle for L. B." | 2002 | 2 vn va vc | 3' | ||
| "Equali" | 2001 | 2 vn va vc | 15' | |
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| "Inter Pares" | 2000 | 2 vn va vc | 24' | |
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| "Pentacle" | 2000 | vn vc | 18' | |
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| "Parthenia Violata" | 1998 | vn pf | 11' | |
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| "Spring Leaves" | 1998 | fl pf | 15' | ||
| "Brown Studies" | 1997 - 1998 | 2 vn va vc | 20' | |
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| "Marche Oubliée" | 1996 rev. 2004 | vn vc pf | 9' | ||
| "Moresque" | 1996 | ob perc | 10' | ||
| "Dekatriad" | 1995 | 8 vn 2 va 2 vc db | 8' | |
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| "Fügung" | 1995 | bcl, hpd | 10' | ||
| "Catacombs" | 1994 rev. 2004 | cl vn vc pf | 12' | ||
| "Vampirella / Company of Wolves" | 1994 | ssax, gui, pf, org, vc, perc, tape | 25' | ||
| "Seachanges (with Danse Macabre)" | 1993 | picc+fl in G, pf, perc, vn, vc | 13' | ||
| "Birds and beasts" | 1992 -1993 | vn pf | 10' | ||
| "Catenae" | 1991 | fl, ob, cl, bn, hn, perc, 2 vn, va, vc, db | 23' | ||
| "Contretemps" | 1989 | 2 pf | 12' | ||
| "Two Silhouettes" | 1988, 1993 | ca, bcl, asax, bn | 7' | ||
| "Écarts" | 1986 | vn va vc | 11' | ||
| "Silhouettes" | 1981 rev. 1995 | fl+g fl+picc, ob+ca, cl, bn, hn | 17' | ||
| "Silhouettes" | 1981 | 2 vn va vc | 17' | ||
| "Aprèslude" | 1979 | fl cl perc hrp va vc | 10' | ||
| "Lichtzwang" | 1979 | vc pf | 8' | ||
| "Parallels" | 1975 | asax, pf | 8' | ||
| "Amalgam" | 1974 - 1975 | vn-solo, fl, trb, pf, org, 3 perc, db | 16' | ||
| "Embers" | 1973, 1979 rev. 1981 | str | 8' | |
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| "Epilogue" | 1973 rev. 2006 | fl gui | 8' | ||
| "Epilogue" | 1973 rev. 1994 | fl pf | 8' | ||
| "Epilogue" | 1973 rev. 1994 | ob gui | 8' | ||
| "Embers" | 1973 | 2 vn va vc | 8' | |
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| "Equivoke" | 1972 | fl hn org pf vc | 8' | ||
| "Aliens" | 1971 - 1972 | cl trb va org hpd | 18' |
Orchestral
| Title | Date | Instrumentation | Duration | Audio | Programme Note |
| "Anaphora for piano and orchestra" | 2022-3 | 2,2,2,2/3,3,3/2 Perc./3 Timp/Hp/Strings | 22' | ||
| "The Alma Fragments" | 2015 | 2222 sax 3221 perc timp pf/cel hrp str | 23' | |
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| "Samara" | 2005 | 3333 4231 4-5 perc pf/cel hrp str | 11' | |
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| "Violin Concerto" | 2003 | vn-solo, 3232 2221 pf 3 perc hrp str | 25' | |
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| "Ripieno" | 1998 - 1999 | 4333 4331 4 perc pf+cel hrp str | 30' | |
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| "Concerto for Oboe and Large Orchestra" | 1993 - 1994 | ob-solo, 3233 4331 ssax+asax 4 perc pf org [opt.] hrp str | 22' | |
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| "Epitomes" | 1993 - 1994 | 2222 4231 perc str | 8' | ||
| "Krespel's Concerto" | 1990 | vn-solo, 3333 4331 2 perc hrp pf str | 23' | |
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| "Quaternion" | 1988 | pf-solo, 2222 2221 cel 2 perc hrp str [10.8.6.6.3.] | 15' | |
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| "Thresholds" | 1987 rev. 1991 | 3[+ 2 trec]333, 4331, uilpipes, 3 perc, cel, hrp, mand, str [16.14.12.10.8] | 19' | ||
| "Mórchuid cloch is gannchuid cré" | 1987 | 1100 0100 concertina+uilpipes perc 2 hrp gui mand str | 25' | ||
| "Chamber Concertino" | 1985 | 1111 1110 2 perc hrp pf+cel str | 18' | ||
| "de/montage" | 1984 | 1111 1110 perc pf+cel mar+glock str | 18' | ||
| "Enchaînement" | 1981 - 1982 | 4444 6442 7 perc pf cel hrp str [min.16.14.12.10.8] | 17' | ||
| "Compact" | 1976 | pf-solo, 2121 2221 5 perc hrp cel str [min. 4.4.6.4.2] | 10' | ||
| "Sphinxes" | 1972 | 2222 4231 timp perc pf str | 7' | |
String Orchestra
| Title | Date | Instrumentation | Duration | Audio | Programme Note |
| "Five Piece Suite" | 1999 | str | 10' | |
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| "Concursus" | 2004 | vn-solo, va-solo, str | 20' | |
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| "Dekatriad" | 1995 | 8 vn 2 va 2 vc db | 8' | |
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| "Embers" | 1973, 1979 rev. 1981 | str | 8' | |
Solo Instruments
| Title | Date | Instrumentation | Duration | Audio | Programme Notes |
| "Scintillae" | 2020-2021 | piano solo | 14' | |
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| "Reprise" | 2019 | piano solo | 8' | ||
| "Razan" | 2018 | piano solo | 6' | |
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| "Tapestry XIII" | 2016 | pf | 5' | |
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| "Communication Chord" | 2015 | Speaking violinist | 4' | |
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| "Legerdemain" | 2013 | pf | 10' | |
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| "Noctuary - 12 pieces" | 2010-2011 | pf | 45' | |
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| "Tekeli-li" | 2008-9 | flute(s) | 6' | ||
| "Annaghmato" | 2006 | pf | 1' | ||
| "Siris" | 2006 | pf | 25' | |
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| "Brève" | 2003 | va | 2' | ||
| "Rahu's Rounds" | 1998 | pf | 12' | |
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| "Excursus" | 1996 | cl | 7' | ||
| "Excursus" | 1996 | ssax | 7' | ||
| "Chorale" | 1995 - 1996 | pf | 5' | ||
| "Apostille" | 1993 | org | 8' | |
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| "Nouvelles Équivoques" | 1990 | hpd | 10' | ||
| "After - Pieces" | 1989 - 1990 | pf | 17' | |
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| "Two Silhouettes" | 1988 | org | 7' | ||
| "Avatars" | 1982 | pf | 9' | |
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| "Piano Sonata No. 2" | 1981 | pf | 21' | ||
| "Mutatis Mutandis" | 1978 -1979 | fl+picc+fl in G | 6' | ||
| "Agalma" | 1978 | org | 9' | ||
| "Ein Blatt Baumlos" | 1977 rev. 1990 | vc+perc | 5' | ||
| "Triarchia" | 1977 - 1978 rev. 1981 | pf | 9' | ||
| "Piano Sonata No. 1" | 1974 rev. 1980 | pf | 13' | ||
| "Linos I/II" | 1973 rev. 1984 | pf | 7' | ||
| "Four Inscriptions" | 1973 | hpd | 8' | ||
| "Idols" | 1971 rev. 1996 | org | 10' | ||
| "Orphica" | 1969 - 1970, rev. 1981, 1996 | pf | 25' |
Vocal and Choral
| Title | Date | Instrumentation | Duration | Audio | Programme Notes |
| "5 Roses in 4 Parts" | 2021 | Vocal quartet or mixed choir | 10' | |
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| "Galar an ghrá" | 2018-2019 | 3 Irish language songs for baritone (or tenor) and piano | 13' | |
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| "Siberia – Landscapes of Exile II" | 2013/2021 | soprano and string orchestra, based on String Quartet V | 20' | ||
| "Finsheen (Foinsín)" | 2019 | 4 solo voices, 7 instruments (flute, Irish harp, accordion, violin, viola, cello, double-bass) - text: René Böll | 20' | ||
| "Voices, receding" | 2015 | Soprano, pf | 6' | |
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| "The Alma Fetish" | 2006-2012 | S, Mezzo-S, Bar, Chorus, 2222/3221/pf-cel/hp/timp/perc/strings | 1hr 45' | |
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| "The Wall of Cloud" | 1997 | 2 S-solo, Mez-solo, T-solo, fl+afl+picc+ocarina/srec, cl+bcl+perc, perc hrp vn vc db | 85' | ||
| "So quiet now..." | 1996 | S-solo, va, pf | 2' | ||
| "Two Songs for Paris" | 1995 | Mez-solo, va, pf | 8' | ||
| "Una Musica Riposa" | 1993 | Mez-solo, ob, vc, pf | 16' | ||
| "The Poet and his Double" | 1991 | Mez-solo, T-solo, Bar-solo, cl hn perc pf vn vc, 3 actors | 22' | ||
| "November Songs" | 1990 | Mez-solo, ob, bcl, pf, vn, vc | 23' | ||
| ".e mi sovvien l'eterno." | 1987 | satb [div.] | 7' | ||
| "Achair" | 1987 | S-solo, fl+rec, ob, cl, perc, hrp, 2 vn, va, vc | 17' | ||
| "Mórchuid cloch is gannchuid cré" | 1987 | S-solo, 1100 0100 concertina+uilpipes perc 2 hrp gui mand str | 25' | ||
| "Krespel" | 1983 | S-solo, satb, vn-solo, 3232 3331 2 perc pf hrp str [12.9.6.3], 3 speaker | 30' | ||
| "Tristia" | 1980 | S-solo, fl, cl, perc, pf, vn, va, vc | 11' | ||
| "Slán le Suirí" | 1974 | satb [div.] | 4' |
Band
| Title | Date | Instrumentation | Duration | Audio | Programme Notes |
| "Alembic" | 1992 | picc, 2 fl, 2 ob, ca, 4 cl, bcl, 2 bn, asax, tsax, barsax, 3 tpt, 4 hn, 3 trb, euph, tuba, 4 perc | 10' | |
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Electro-acoustic
| Title | Date | Instrumentation | Duration | Audio | Programme Notes |
| "Passage - work" | 2001 | S-solo, fl+picc, cl, 2 perc, pf, vn, vc, db, tape | 10' | |
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