Opus Title (Year) 1 Five Pieces for Piano (1945) 2 Concertino for Orchestra (1947) ESCO Foundation Award 3 Poem for String Quartet and Voices (1947) ESCO Foundation Award 4 Sonatina for Violin Solo (1948) 5 American Minuet for Windquintet (1948) and arrangement for piano (1948) 6 Sonatina for Flute Solo (1948) 7 The Student and the Nightingale, ballet (1949) 8 Ouverture (dedicated to Chaim Weizmann) (1949) commissioned by Leonard Bernstein 9 Nia Nua (folk dance) for small orchestra (1949) and arrangement for piano (1949) 10 Rondo for Military Band (1950) and arrangement for piano 11 To En Gev, song (1950) alto voice, keyboard 12 Sonatina for Viola Solo (1950) 13 Vacation, ballet (1951) 14 no.1 Prelude for Piano (1951) no.2 Lament for Piano (1951) 15 Queen of Sheba, musical (1951) 16 Sonata for Piano (1951) 17 Letters to Shulamit (piano pieces for children) (1952) 18 String Quartet No.1 (1952) 19 Fanfare (opening of concert hall, Em Geb) (1953) 20 Sonatina for Bassoon Solo (1953) 21 Trio for Flute, Clarinet and Bassoon (1953) 22 Music for Theater 23 String Quartet No.2 (1957) 24 Suite Variable for Harpsichord (1957) commissioned by Frank Pelleg 25 Anepigraphe (1958) two-channel tape - produced in electronic studio, WDR, koln, Germany 26 Mobile for Orchestra (1958) - commissioned by Palermo Festival 27 String Quartet No.3 (1961) - commissioned by the LaSalle String Quartet 28 Klange unterwegs (Wayfaring Sounds) (1962) two-channel tape - commissioned by Bavarian Radio, produced in electronic studio, Siemens, Germany 29 Non Sequitur III (1963 ) 30 Futility 1964 (1964) two-channel tape - produced in electronic studio, University of Illinois

31 Gestures for Eleven (1964) for chamber ensemble 32 Sonoriferous Loops (1964) for chamber ensemble and two-channel tape realized with help of computers IBM 7694, IBM 1401, and CSX-1 in Department of Computer Science, University of Illinois 33 Trio for Flute, Double-Bass and Percussion (1964) 34 Gesto for Piccolo and Piano (1965) - commissioned by Severino Gazzeloni 35 Non Sequitur VI (1966) for chamber ensemble and two-channel tape commissionedby Radio Bremen, realized with help of computers IBM 7094 and Illiac II in Department of Computer Science, University of Illinois 36 Trio for Trumpet, Trombone and Percussion (1966) 37 no.1 Plot for Percussion (1967) for percussion solo no.2 Touch and Go (1967) for percussion solo no.3 Stalks and Trees and Drops and Clouds (1967) for percussion solo realized with help of computer IBM 7094, drawn by the CALCOMP plotter 38 Infraudibles (1968) two-channel tape Infraudibles with quintet (1968) for chamber ensemble and two-channel tape 39 Mutatis Mutandis (1965) graphics for interpreters 40 Nonet (1969) for chamber ensemble - commissioned by Marianne Brün 41 six for five by two in pieces (1971) for chamber ensemble 42 Piece of Prose (1972) two-channel tape - commissioned by Polish Radio, produced in electronic studio, Warsaw, Poland 43 "at loose ends: (1974) for chamber ensemble 44 In and... and Out (1974) for chamber ensemble - commissioned by Contemporary Chamber Players of the University of Illinois 45 Dust (1976) (SAWDUST Nr. 1) four-channel or two-channel tape 46 More Dust (1977) (SAWDUST Nr. 2) four-channel or two-channel tape More Dust with Percussion (1977) percussion trio and four-channel or two-channel tape 47 'per contra: serenata: bassa' (1977) for double bass solo - International Society of Bassists' award 48 Dustiny (1978) (SAWDUST Nr. 3) four-channel or two-channel tape 49 A Mere Ripple (1979) (SAWDUST Nr. 4) four-channel or two-channel tape