First period • 1935
Generatrix for orchestra (unfinished) • 1939–41 String Trio • 1940
Composition for String Orchestra (unfinished) • 1941 Symphony (unfinished) • 1941
Music for the Mass I for mixed chorus • 1942
Music for the Mass II for mixed chorus • 1946
Fabulous Voyage (musical, libretto by Richard Koch) • 1946
Three Theatrical Songs for voice and piano (taken from Fabulous Voyage) • 1947
Three Compositions for Piano • 1948
Composition for Four Instruments • 1948 String Quartet No. 1 (withdrawn) • 1948
Composition for Twelve Instruments • 1949
Into the Good Ground film music (withdrawn) • 1950
Composition for Viola and Piano • 1951 ''The Widow's Lament in Springtime'' for soprano and piano • 1951
Du for soprano and piano,
August Stramm • 1953 Woodwind Quartet • 1954
String Quartet No. 2 • 1954
Vision and Prayer for soprano and piano (unpublished, unperformed) • 1955
Two Sonnets for baritone, clarinet, viola, and cello, two poems of
Gerard Manley Hopkins • 1956 Duet for piano • 1956
Semi-Simple Variations for piano • 1957
All Set for jazz ensemble (alto saxophone, tenor saxophone, trumpet, trombone, contrabass, piano, vibraphone, and percussion) • 1957
Partitions for piano • 1960
Composition for Tenor and Six Instruments • 1960
Sounds and Words for soprano and piano
Second period • 1961
Composition for Synthesizer • 1961
Vision and Prayer for soprano and synthesized tape, setting of a poem by
Dylan Thomas • 1964
Philomel for soprano, recorded soprano, synthesized tape, setting of a poem by
John Hollander • 1964
Ensembles for Synthesizer • 1965
Relata I for orchestra • 1966
Post-Partitions for piano • 1966
Sextets for violin and piano • 1966
Play on Notes for bells and voice • 1967
Correspondences for string orchestra and synthesized tape • 1968
Relata II for orchestra • 1968–69
Four Canons for SA • 1969
Phonemena for soprano and piano • 1970
String Quartet No. 3 • 1970
String Quartet No. 4 • 1968–71
Occasional Variations for synthesized tape • 1972
Tableaux for piano • 1974
Arie da capo for five instrumentalists • 1975
Reflections for piano and synthesized tape • 1975
Phonemena for soprano and synthesized tape • 1976 Concerti for violin, small orchestra, synthesized tape • 1976
A Birthday Double Canon for SATB • 1977
A Solo Requiem for soprano and two pianos • 1977
Minute Waltz (or 3/4 ± 1/8) for piano • 1977
Playing for Time for piano • 1978
My Ends Are My Beginnings for solo clarinet • 1978
My Complements to Roger for piano • 1978
More Phonemena for twelve-part chorus • 1978
Eppesithalamium for solo cello • 1979
An Elizabethan Sextette for six-part women's chorus • 1979
Images for saxophonist and synthesized tape
Third period • 1979
Paraphrases for ten instrumentalists • 1980
Dual for cello and piano • 1981
Ars Combinatoria for small orchestra • 1981
Don for four-hand piano • 1982
The Head of the Bed for soprano and four instruments • 1982
String Quartet No. 5 • 1982
Melismata for solo violin • 1982
About Time for piano • 1983
Canonical Form for piano • 1983
Groupwise for flautist and four instruments • 1984
Four Play for four players • 1984
It Takes Twelve to Tango for piano • 1984
Sheer Pluck (composition for guitar) • 1985 Concerto for piano and orchestra • 1985
Lagniappe for piano • 1986
Transfigured Notes for string orchestra • 1986
The Joy of More Sextets for piano and violin • 1987
Three Cultivated Choruses for four-part chorus • 1987
Fanfare for double brass sextet • 1987
Overtime for piano • 1987
Souper for speaker and ensemble • 1987
Homily for snare drum • 1987
Whirled Series for saxophone and piano • 1988
In His Own Words for speaker and piano • 1988
The Virginal Book for contralto and piano, setting of a poem by
John Hollander • 1988
Beaten Paths for solo marimba • 1988 ''Glosses for Boys' Choir'' • 1988
The Crowded Air for eleven instruments • 1989
Consortini for five players • 1989
Play It Again, Sam for solo viola • 1989
Emblems (Ars Emblematica), for piano • 1989
Soli e duettini for two guitars • 1989
Soli e duettini for flute and guitar • 1990
Soli e duettini for violin and viola • 1990
Envoi for four hands, piano • 1991
Preludes, Interludes, and Postlude for piano • 1991
Four Cavalier Settings for tenor and guitar • 1991
Mehr "Du" for soprano, viola and piano • 1991
None but the Lonely Flute for solo flute • 1992
Septet, But Equal • 1992
Counterparts for brass quintet • 1993
Around the Horn for solo horn • 1993
Quatrains for soprano and two clarinets • 1993
Fanfare for All for brass quintet • 1993
String Quartet No. 6 • 1994
Triad for viola, clarinet, and piano • 1994
No Longer Very Clear for soprano and four instruments, setting of a poem by
John Ashbery • 1994
Tutte le corde for piano • 1994
Arrivals and Departures for two violins • 1994
Accompanied Recitative for soprano sax and piano • 1995
Manifold Music for organ • 1995
Bicenquinquagenary Fanfare for brass quintet • 1995 Quartet for piano and string trio • 1996 Quintet for clarinet and string quartet • 1996
Danci for solo guitar • 1996
When Shall We Three Meet Again? for flute, clarinet and vibraphone • 1998 Piano Concerto No. 2 • 1998
The Old Order Changeth for piano • 1999
Composition for One Instrument for celesta • 1999
Allegro Penseroso for piano • 1999
Concerto Piccolino for vibraphone • 2000
Little Goes a Long Way for violin and piano • 2000
Pantuns for soprano and piano • 2001
A Lifetime or So for tenor and piano • 2002
From the Psalter soprano and string orchestra • 2002
Now Evening after Evening for soprano and piano, setting of a poem by
Derek Walcott • 2002 ''A Gloss on 'Round Midnight'' for piano • 2003
Swan Song No. 1 for flute, oboe, violin, cello, mandolin (or guitar), and guitar • 2003
A Waltzer in the House for soprano and vibraphone, setting of a poem by
Stanley Kunitz • 2004
Round for SATB • 2004 Concerti for Orchestra, for James Levine and the Boston Symphony Orchestra • 2004
Autobiography of the Eye for soprano and cello, setting of a poem by
Paul Auster • 2005–6
More Melismata for solo cello • 2006
An Encore for violin & piano
String quartets ;First period • 1948 String Quartet No. 1 (withdrawn) • 1954
String Quartet No. 2 ;Second period • 1970
String Quartet No. 3 • 1970
String Quartet No. 4 ;Third period • 1982
String Quartet No. 5 • 1993
String Quartet No. 6 ==Selected discography==