ORCHESTRA

Piano Concerto No. 1 in D, piano, orchestra [33’] 1961-65
Orchideæ Ordinariæ or the Twelfth Root of Truth, large orchestra [37’], 1989 (two movements may be performed separately: L’Orchidée d’argent, Pandora  – cf. ↓“Solo Music”)
Piano Concerto No. 2, «Aux fins des quelques siècles», piano, orchestra [16’] 1961-98

CHAMBER MUSIC
(More Than 5 Instruments)

Serenade, flute, oboe, clarinet, bassoon, string quartet, double bass [16’], 1967
Cheltrovype (German Tschelpowisch), cello, trombone, vibraphone, 3 percussion [22’], 1971
Im Januar am Nil, 2 soprano saxophones (1st+clarinet, bass clarinet), 4 violins, 2 celli, double bass, piano, percussion [25’], 1981-84
Felle Hymnus Van Verre, 2 French horns, 2 trumpets, 2 trombones, tuba, timpani [2’], 2001 (section of Jubileum-Fanfare [9’], a collaboration with Louis Andriessen, Gilius van Bergeijk, Martijn Padding, Diderik Wagenaar);
Sachets des Ciseaux Insatiables, flute, clarinet, trumpet, violin, viola, piano, percussion [9’], 2002 (new versions of sections from Im Januar am Nil, Les Ciseaux de Tom Johnson, Four Identical Pieces); [audio], [score]  Glockenspiel für Jens, 6 percussion [2’], 2004 (also for carrillon or for 6 singers – cf. ↓“Vocal/Choral Music”)
Septima de facto, flute, clarinet, trumpet, viola, cello, piano, percussion [7’], 2006 (also for 2 pianos, player piano or other music machines – cf. ↓“Chamber Music (Up To 5 Instruments)” and ↓“Electroacoustic Music”); [audio], [score] From “Progéthal Percussian for Advanced Beginners”, 6 percussion [20+’], 2003- (ongoing work)

CHAMBER MUSIC
(Up To 5 Instruments)

String Quartet No. 1 in G [15’], 1961
Divertimento for Winds, oboe, clarinet, French horn, bassoon [6’], 1965
Eleven Pieces, clarinet, bassoon [4’], 1966
String Quartet No. 2 [15’], 1966
Trio, mandolin, violin, piano [3’], 1966
Canonzetta, violin, piano [3’], 1967
Relationships, any melody instrument, 1974 (versions for
[1] 2 keyboard instruments or 9 strings or violin, cello, piano [6’], 1974
[2] 3 North Indian players [~15’], 1974
[3] 2 vibraphones [20’], 1976
[4] 2 pianos [64’], 1976
[5] player piano [~15’], 1984
[6] bass clarinet, electric guitar, computer-generated synthesizer, percussion [~10’], 1985)
1981, violin, cello, piano [8’], 1981
Tatsachen, five pieces of music theatre, 1982-83
[1] Xylophony I, percussion [10’] [2] Vorbeugung, two actors [2’] [3] Performation, five or more actors [~10’] [4] Variations, female cellist, actress [4’] – version of variations [2] (cf. ↓“Solo Music”)
[5] In Memoriam SA, two pianists, page turner [6’] “Spright the Diner” by Nib Wryter, violin, cello, piano [18’], 1984-86
Les Ciseaux de Tom Johnson, electric guitar, soprano saxophone (or alto flute), double bass [3’], 1998 (also for violin, cello, piano)
Septima de facto, 2 pianos [7’], 2006 (version of ensemble work – cf. ↑“Chamber Music (More Than 5 Instruments)”; also version for player piano, 2006 – cf. ↓“Player-Piano Music” )
Tischgeistwalzer, 2 pianos [1’], 2009
Pinball Play, four Bohlen-Pierce clarinets [9’], 2010; [audio], [score] vinte e cinco anéis, flute, clarinet, violin, violoncello, piano [1’], 2010; [audio], [score]

SOLO MUSIC

Piano Suite, piano [5’], 1966
Twelve Variations, piano, 2-track fixed media [4’], 1968
Textmusic, 1971 (16 versions in all, 1972-84, Nos. 2, 3, 5, 6, 9, 12-14, 16 by other composers)
[1] after a text by C. Barlow, piano [20’], 1971
[4] after a text by C. Barlow, piano [3’], 1973
[7] after Psalm 150, organ  [3’] , 1973
[8] after a text by W. Ostermann, piano [10’], 1973
[10] after spoken rhythms of Indian Music, two pianos [2’], 1974
[11] after a text by C. Barlow, piano [6’], 1977
[15] after a text by C. Barlow, piano [2’], 1984 (embedded in chamber work Im Januar am Nil)
variations, any melody instrument (+ voice), 1971 (versions for
[1] after W. Ostermann, trombone [10’], 1973
[2] after F. Lehar, cello [~12’], 1983
[3] after Happy Birthday, cello [~2’], 1995)
Stochroma, piano [→∞], 1972
…until…, any melody instrument, 1972 (versions for
[1] ensemble [15+’], 1973
[2] violin [~20’], 1973
[3] sarangi, tabla [~12’], 1974
[4] jazz ensemble [~18’], 1974
[5] piano [4’], 1974
[6] clarinet [15+’], 1977
[7] guitar [~12’], 1981
[8] piccolo [~10’], 1981
[9] 2-track tape [3’], 1995)
Fugue on the Name Cage after No. 5 of Six Fugues on the Name Bach Op. 60 by Robert Schumann, any keyboard instrument [2’], 1973 – cf. ↓“Electroacoustic Music”
Fantasia quasi una sonata con «Mantra» di Stockhausen, piano [20’], 1973
Çoğluotobüsişletmesi, piano 2 or more hands [30’], 1975-79 (also version for 4 pianos, 2006)
Variazioni e un piano meccanico, pianist with player piano [24’], 1986
Fruitti d’Amore (music theatre), cello, live electronics [29’], 1988 (cf. ↓“Electroacoustic Music”)
[1] con fuoco alla Giordano [16’] – including The Weather [3’] [2] musica alla vostra commodità [9’] [3] uccelli ungheresi [4’] (with video)
L’Orchidée d’argent, piano [1’], 1989 (movement of Orchideæ Ordinariæ or the Twelfth Root of Truth for orchestra)
Pandora, piano [8’], 1989 (movement of Orchideæ Ordinariæ or the Twelfth Root of Truth for orchestra)
Otodeblu, player piano/piano 4 hands [4’], 1990
Qu’a lieu d’en bas, piano [9’], 1994
[1] clair au debut, piano 2 hands [3’] [2] clair de l’une fois, piano 4 hands [1’] [3] clair d’eux même, piano 6 hands [2’] [4] clair triomphalement, piano 8 hands [3’] Four Identical Pieces, piano [12’], 1995 (also version of [3] as Section III of Sachets des Ciseaux Insatiables)
[1] Helmut, un morceau lourd en forme de poire [3’] [2] Des nus descendant une échelle [3’] [3] Elle l’a vue, elle l’a bue, la pomme insatiable [3’] [4] Chronique tangentielle 36°52’12” [3’] Kuri Suti Bekar, piano [3’], 1998

‘…or a cherish’d bard…’, piano [8’], 1999
Le loup en pierre, organ (Van Hagerbeer mean-tone ¼-comma A=419 + Thomas Hill 12 eq.temp. A=440) [7’], 2002; [audio], [score] 3-4-5 (Reading nimbly through Ives’ Three-Page Sonata and Schoenberg’s Five Piano Pieces), 1-2 pianists [3’], 2004; [audio] Ludus Ragalis, piano [20’], 1974-2006; [audio] resonancia flautomática, melody instrument, live computer electronics [8’], 2008 ( cf. ↓“Electroacoustic Music”)
Für Simon Jonassohn-Stein, MIDI-controlled pipe organ [5’], 2012, [score] Song of DanieL, piano [2-5’], 2013
KQJZ: waveform ambidextrously uncopyrightable, piano [3’], 2013
Für Eleath, piano [2’], 2013

VOCAL/CHORAL MUSIC

Missa Brevis pro Unitatis Ecclesiæ «ut sint unum», mixed chorus [2’], 1967
Zwei Gesänge, mezzo-soprano, piano [4’], 1968
Haiku, baritone, clarinet [4’], 1968
Three Owen Songs, baritone, piano [8’], 1968
documissa ’87, mixed chorus, 2-track tape [30’], 1987
I.    Fünf Hymnen: Jauchzt, alle Lande / Ehr sei dem Vater / Herre Gott, erbarme Dich / Ehre sei Gott in der Höhe / Wunderbare König
II.  Die Schöpfung: Musik zur Lesung / Musik zur Predigt – Sieben Betrachtungen
III. Coda: Schlusshymne – Du, meine Seele, singe / Musik zum Segen
Farting Quietly in Church – Vortrag über Haiku (music theatre), baritone, 6 computers, MIDI player piano [40’], 1994 – cf.↓“Electroacoustic Music”
Glockenspiel für Jens, soprano, alto, 3 tenors, baritone [2’], 2004 (also for carrillon or for 6 percussionists – cf. ↑“Chamber Music (More Than 5 Instruments)”)

PLAYER-PIANO MUSIC

Relationships [5] [~15’], 1984 (version of chamber work – cf. ↑“Chamber Music (Up to 5 Instruments)”)
Variazioni e un piano meccanico, pianist with player piano [24’], 1986 (cf. ↑“Solo Music”)
Farting Quietly in Church – Vortrag über Haiku (music theatre), baritone, 6 computers, MIDI player piano [40’], 1994 – cf. ↑“Vocal/Choral Music”
Estudio Siete: A Metamorphosis of Oskar Fischinger’s Study No. 6 as well as a Short Paraphrase of Conlon Nancarrow’s Study No. 6, player piano [2’], 1995 (with video)
Amaludus (live computer installation), 2 computers, 2 MIDI player pianos [0/0’], 1995
Two Fugues on the Name Cage after Fugues #5 and #6 on the Name Bach Op. 60 by Robert Schumann, MIDI player piano [2’, 4’], 1973/2012 – cf. ↑“Solo Music”

ELECTROACOUSTIC MUSIC
(with radio plays and music theatre)

Sinophony I, 4-track [11’], 1969-70
Sinophony II, 8-track [25’], 1969-72
Reidosklopädie? Enzykloskoport? (radio play), 2-track [88’], 1972-76
CCU (radio play), 8-track [48’], 1980
Deutscher Sang (radio play), 2-track [30’], 1980
Relationships [6], bass clarinet, electric guitar, computer, MIDI synthesizer, percussion [~10’], 1985 (version of chamber work – cf. ↑“Chamber Music (Up To 5 Instruments)”)
documissa ’87, mixed chorus, 2-track [30’], 1987 (cf. ↑“Choral Music”)
Fruitti d’Amore (music theatre), cello, 2 computers with live electronics [29’], 1988 (cf. ↑“Solo Music”)
(stopt niet in De Vink), 2-track [17’], 1991
Talkmaster’s Choice (live computer installation), 4 computers [18’], 1992 (also 2-track version as
fLvXv$: A Time and Attention Study, or His Master’s Voice, 1992)
Six Fugues on the Name Cage after Six Fugues on the Name Bach Op. 60 by Robert Schumann, MIDI-keyboard, computer [10’], 1973/1992 – cf. ↑“Solo Music”
Farting Quietly in Church – Vortrag über Haiku (music theatre), baritone, 6 computers, MIDI player piano [40’], 1994 – cf. ↑“Vocal/Choral Music”
…until… [9], 2-track [3’], 1995 (version of chamber work – cf. ↑“Solo Music”)
Amaludus (live computer installation), 2 computers, 2 MIDI player pianos [0/0’], 1995
Zero Crossing (Radio Play), 2- or 4-track [41’], 2001
Muntschpmäntsch (in collaboration with Juan Sebastian Lach), video [11’], 2005
Approximating Pi, 2-, 4-, 8- or 16- track [various versions 8’, 15’, 74’], 2007
Four ISIS Studies:
[1] Für Gimik: Vortrag über ISIS, 4-track [2’], 2003
[2] Eleven Steps in Staying a Kingly Dream, 4-track [1’], 2004
[3] Untitled/Oil on Metal, Wood, 4-track [1’], 2007
[4] Ceci n’est pas une œuvre d’art, 4-track [1’], 2008
resonancia flautomática, melody instrument, live computer electronics [8’], 2008 ( cf. ↑“Solo Music”)
Songbird’s Hour, mono [60’], 2011 (also 8-track version Songbird’s Hour Octasected [8’], 2013)