Instrumentation Opus n. Title Kind of instrumentation Piano Solo 1 Anubis     2 Sonatina     3/A Iblis-Suite     4 So slow     5 Memoria del diluvio     6/C Due Pensieri     8/A Tre incantesimi etruschi     8/B Due incantesimi     9 Sonata 1     11 Sonata 2     13 Sonata 3     14 Seelenkalendar     15 Eliogabalo     19 Berceuse (Klingsor-Iblis)     20 Seconda sonatina     22/B Sonneries     23 Enigma     26/A Notturno(sequenza del Fayyum)     31 Waiting music     38/A Toccata     38/B Toccata     44 Sonnerie de Aiwass (Sonata 4)     45 Toccata 2     49 Toccata 3     52 Toccata 4     65/L Terza Sonatina     68/B Toccata 5     71 Toccata 6     73 Disco-Fugue     82 Kleine Ibach Fugue     90 Toccata 7     91/B Sonatina in canone     124 Toccata 8           Two or more pianists etc. 27 Quartetto 4 Pianos   33/G Double-Machine 2 Pianos   34/A Keyboard-Phase 2 Pianos   35/A Piano-Brain 9 Pianos   35/B Piano-Brain 9 Pianos   35/C Piano-Brain 9 Pianos   43 Keyboard Master 2 Pianos   46 Piano quartets 4 Pianos   56/B Keyboard-Rain 3 Pianos   58 Data-Hands Four hands piano or 2 Pianos   62/B Some rain patterns 3 Pianos   126/B Steinbock bagatellen 2 Pianos or Piano four hands         Electric Organ 34/B Keyboard-Phase 2 Electric Organs   62/A Some rain patterns 3 Electric Organs         Pipe Organ 91/K Sonatina canonica     103 Primo libro d’ organo     104 Secondo libro d’ organo     106 Preludio e toccata     112/E Sonatina     115/C Preludio e toccata     125 Credo sonata           Harpsichord 48 Risveglio     65/C Sonatina per il cembalo     68/A Toccata per il cembalo     73 Disco-Fugue     82/B Piccola fuga     86 Les nouvelles baricades     91/A Quattro canoni     112/A Tre preludi           Winds without Piano 3/B Iblis-Suite Oboe & English horn   7/A Etude du reveil 2 Recorders   7/B Etude du reveil 2 Oboes or 2 Clarinets   7/C Etude du reveil 2 Flutes   7/D Etude du reveil 2 English horns   10 Guillaume Oboe,Clarinet & Bassoon   12 Abendstuck Oboe d'amore or English horn   12/B Abendlied Recorder   18 Aria di Eliogabalo Oboe d'amore or English horn   18/B Seconda aria di Eliogabalo Oboe d’amore or English horn   18/C Canto di Eliogabalo Recorder   21/A Reveil Memoire 2 Oboes & English horn   21/C Ex Deo nascimur 3 Recorders   21/D Reveil memoire 3 Sax   24 Chastel 2 Oboe & English horn (1 player)   30/A Conductus 2 Trumpets & Trombones   30/B Conductus Oboe & English horn   30/C Conductus 2 Oboes & English horn   30/D Conductus Oboe,Clarinet & Bassoon   30/F Conductus 3 Recorders   30/G Conductus 3 Recorders   30/H Conductus 3 Sax   33 Thelema's hot machine Flute or Oboe   33/B Machine Oboe d'amore or Clarinet   33/C Breath Machine Oboe   33/D Double-Machine 2 Flutes   39 Midi Quintet Woodwind quintet   40/B Fandango(Thelema's two) Flute   40/B Fandango Flute (revision)   42/A Due Canoni 2 Oboes & English horn   42/B Due Canoni Flute,Oboe & Clarinet   42/D Due Canoni 3 Recorders   42/E Due Canoni 3 Recorders   47/C Fade Control 4 Recorders   51/B Double quartet 8 Recorders   53/C Loeki in echo 4 Recorders   59/C Christe Eleison 5 Recorders   59/D Christe 5 Recorders   60/A Bagatella in trio Oboe,Clarinet & Bassoon   60/B Bagatella in trio Oboe,english horn & Bass Clarinet   60/C Due bagatelle 3 Recorders   65/A Sonatina English horn   65/B Sonatina Clarinet   65/F Sonatina in quartetto 4 Recorders   65/H Sonatina Soprano Recorder   65/I Sonatina 2 Recorders   65/J Sonatina Oboe & English horn   65/K Bezaly sonatina Flute   65/M Due bagatelle 2 Sax   68/C Clockwork-Toccata 4 Recorders   68/D Double-Reeds Toccata 2 Oboes,English horn & Bassoon   68/I Clockwork quartet 4 Recorders   69/C De profundis clamavi 4 Recorders   72/A Clockwork-Game 4 Recorders   74/B Beata Viscera 4 Recorders   74/C Beata Viscera 4 Recorders   79/B Corali 4 Recorders   79/C Due Corali 5 Recorders   91/C Alla caccia 2 Recorders   91/D Alla caccia 2 Flutes   91/E Due pensieri in canone Oboe & English horn   91/F Due pensieri in canone 2 Recorders   91/G Minuetto in canone Oboe and English horn   91/H Minuetto in canone 2 Recorders   91/I Minuetto in canone 2 Recorders   91/J Minuetto in canone Recorder & Flute or Oboe   91/L Sonatina canonica 3 Recorders   91/M Sonatina canonica 2 Oboes & English horn   92/A Sonatina d’inverno 2 Oboes & English horn   92/B Sonatina d’inverno 3 Recorders   92/D Sonatina d’ inverno 3 Sax   94/B Steinbock toccata Alto Recorder   94/C Steinbock toccaten 2 Recorders   94/D Steinbock toccaten 2 Flutes   94/E Steinbock toccata Flute   96/A 16 Letters 4 Sax   96/B 16 Letters 4 Recorders   96/C Two recorders 2 Recorders   96/D Breathless duo 2 Sax   97/A Mindplace Flute   97/C Mindplace Sax   98/B Tenebrae factae sunt 6 Recorders   99/A Sonatina Sax   99/B Sonatina Recorder   99/C Sonatina 2 Sax   99/D Sonatina 2 Recorders   99/E Sonatina Flute   99/F Sonatina 2 Flutes   99/H Pensieri e domande 2 Oboes or 2 Oboes d’amore or 2 English horns   99/I Pensieri e domande Oboe or Oboe d’amore or English horn   105/A Sonatina d’ autunno 2 Oboes & English horn   105/B Sonatina d’ autunno 3 Recorders   107 Pensieri del tramonto 4 Recorders   108/A Le stagioni in fuga 3 Recorders   108/B Le stagioni in fuga 2 Oboes & English horn   112/B Wedding sonatina Oboe and Clarinet   112/C Wedding sonatina 2 Recorders   112/D Wedding sonatina Oboe & English horn   112/F Sonatina d’ estate 3 Recorders   113 n.1 La Flauteria 12 Recorders   113 n.2 La Flauteria 16 Recorders   113 n.3 La Flauteria 12 Recorders   113 n.4 La Flauteria 12 Recorders   115/A Preludio e Toccata 4 Recorders   115/B Preludio 2 Recorders   116/A Steinbock fantasien Recorder   116/D Steinbock fantasien Flute   116/E Steinbock fantasien Sax   116/F Steinbock fantasien Oboe or Oboe d’amore or English horn   116/G Steinbock fantasien 2 Recorders   117 Scherzi del tempo 4 Recorders   126/A Steinbock bagatellen 4 Recorders   131/A Di Lasso ed io 3 Recorders   131/B Di Lasso ed io 2 Oboes & English horn   133/A Koning Karel 4 Recorders         Winds with piano or harpsichord 6/B Due Canzoni Oboe & Piano   17 Anubis English horn & Piano   32 Remake English horn & Piano   36/A Breath Control Oboe d'amore or Clarinet & Piano   36/B Data Breath Flute,Oboe d'amore, Bass Clarinet & Piano   37/A Blue Trumpet & Piano   37/B Blue Bassoon & Piano   47/A Fade Control 3 Clarinets & Piano   47/B Fade Control 2 Oboes,English horn and Piano   47/D Fade Control Flute,Oboe,Clarinet & Piano   60/E Bagatella in duo Flute & Piano   60/G Bagatelle Recorder & Piano   65/D Sonatina in fanfara Trumpet & Piano   65/E Sonatina Recorder & Piano   68/E Toccata in trio Oboe, Bassoon & Piano   68/J Toccata in trio Flute, Oboe & Piano   80/A Seconda toccata in trio Oboe, Bassoon & Piano   99/J Sonatina Recorder & Piano   120 Sonatina Recorder (or Flute) & Piano (or Harpsichord)   127/A Sonatina Recorder & Piano   127/B Sonatina Flute (with piccolo) & Piano   129/A Pensieri musicali Recorder & Piano   130/A Diario English horn & Piano   130/B Diario Recorder & Piano   131/C Di Lasso ed io Recorder & Harpsichord         Percussions 22 Tre Dirges Metallophon   22/C Due sonneries Glockenspiel   25 Caccia notturna Nine Percussion Players   26/B Notturno(sequenza del Fayyum) Vibraphone   28 Seconda caccia notturna Six Percussion Players   33/E Double-Machine 2 Vibraphones   33/F Double-Machine 2 Marimbas   33/H Music Machine Marimba   40/A Fandango Vibraphone   41 Sinfonia di Percussioni Percussions Ensemble   51 Shift (marimbas) 6 Marimbas   53/A Data Game 2 Vibraphones & 2 Glokenspiels   53/B Data Game 2 Vibraphones & 2 Glokenspiels   56/A Keyboard Rain 3 or 4 Marimbas   57 Three Marimbas 3 Marimbas   60/D Bagatella 4 Marimbas   63 Il nome di Reich 3 pairs of tuned claves (or other)   64 Four Sounds 4 suonds of Marimba   68/G Clockwork keyboards 2 Vibraphones & 2 Marimbas   68/H Clockwork vibes 4 Vibraphones   72/B Clockwork-Game 4 Vibraphones   75 Railway-Toccata 2 Marimbas   94 Steinbock Toccaten Marimba   96/E 16 Letters 4 Marimbas   97/B Mindplace Marimba   97/D Double place 2 Marimbas   109/A Clockwork woods 4 Marimbas   114 Keyboard Game 3 Marimbas   115/D Preludio 2 Vibes   116/B Steinbock fantasien Vibes   116/C Esercizio 2 Marimbas   127/C Sonatina Xylophon, Marimba & Bass marimba         Vocal Works 6/A Due Canzoni Voice & Piano   16 Ave Verum Corpus 2 Sopranos & 2 Tenors   21/B Deo 3 voices   30/E Gloria Tibi Trinitas 3 voices   42/C Alleluja 3 voices   59 Christe Choir (5 voices)   59/B Christe Male Soprano & Glassharmonica   61 Agnus Choir (6 voices)   66/A Recordemur Guidi 5 Trumpets,Trombone & Choir (5 voices)   66/B Recordemur Guidi Trumpets,Trombone, Choir (5 voices) & Organ   67 Double kyrie 8 Voices & organ   69/A De Profundis 4 Solo voices & Choir (4 voices)   69/B De Profundis 4 Solo voices & Choir (4 voices) & Organ   70 Super Flumina Babylonis Choir (8 voices)   74/A Beata viscera Choir (5 voices) & Organ   76 Ad occisionem Choir (4/8 voices)   77/A Regina Choir (5/9 voices)   77/B Regina Choir (5/9 voices) & Organ   78 Kyrie Choir (6/10 voices)   79 Due corali Choir (5 voices)   81 Passione secondo Giovanni 10 solo voices & instruments   87 Licht-Choral Choir (6 voices)   87/B Licht-Choral 3 voices   88/A Naissance-Conductus Choir (8 voices)   88/B Naissance-Conductus Choir (8 voices) & harp   89/A Stairs-Agnus Choir (4 voices)   89/B Stairs-Agnus Choir (4 voices) & harp   93 Clouds-Kyrie Choir (6 voices) & harp   95 Tenebrae Bass Choir   98 n. 1 Responsoria Choir (8 voices)   98 n. 2-3-4 Responsoria Choir (4 voices)   98 n.14 Responsoria Choir (8 voices)   98 n.19 Responsoria Choir (4 voices)   98 n.20 Responsoria Choir (6 voices)   98 n.21 Responsoria Choir (6 voices)   98 n.24 Responsoria Choir (5 voices)   103/B Incarnatus Choir (5 voices)   103/C Incarnatus Choir (4 voices) and pipe organ   111 Vivo ego ? 3 Voices   128 Tre studi corali Choir (6 voices)         Works for strings 54 String Quartet String Quartet   56/C Morphing in Strings String Orchestra   119 Sinfonietta String Orchestra         Mixed Instruments 29 Ocean Line (1st version) 13 Players   29/B Ocean Line (2nd version) 15 Players   36/C Doppelbewegung 2 Recorders, Viola, Cello, Piano   50 Due studi ritmici Orchestra   55/A Keyboard Line Violin,Clarinet,Cello & Piano   55/B Keyboard Line Oboe/English horn, Clarinet,Cello & Piano   55/C Keyboard sextet 2 Mar. 2 Vib. 2 Pianos   60/F Bagatella in duo Flute & Harpsichord   65/G Sonatina Glockenspiel & Piano   65/N Tre bagatelle Flute & Marimba   68/F Synchronia in trio Clarinet,Marimba & Piano   74/D Beata viscera English horn & Strings   74/E Beata viscera Recorder & Strings   74/F Beata Viscera Sax & Strings   74/G Beata Viscera Sax & Pipe Organ   80/B Synchronia in quartetto Clarinet,Marimba,Cello  & Piano   99/G Sonatina Flute & Marimba   129/B Pensieri musicali 2 Vibes & Piano         Electronic Compositions 83 Bestiale Electronics & Samplers (on CD)   84 Steve Reich in Italy Electronics & Samplers (on CD)   85 L'isola di Bocklin Electronics & Samplers (on CD)   100 Canto del Doppio Electronics & Samplers (on CD)   101 Solaris I Electronics & Samplers (on CD)   102 Solaris II Electronics & Samplers (on CD)   110 Preludi elettrici Electronics (on CD)   118 La vita degli insetti Electronics (on CD)   121 Gli insetti dell’ aria Electronics (on CD)   122 La vita dell’ acqua Electronics (on CD)   123 Il sogno del doppio