| 1946 | Lyric for Strings | Confirmed | 7' |
| 1959 | Address for Orchestra | Confirmed | 19' |
| 1972 | Variations for Orchestra | Confirmed | 14' |
| 1976 | Concerto for Piano and Orchestra | Confirmed | 24' |
| 1976 | Dialogus for Cello and Orchestra | Confirmed | 13' |
| 1977 | Mass · chorus | Confirmed | 27' |
| 1978 | Antifonys for String Orchestra | Confirmed | 7' |
| 1978 | Concerto for Trombone (wind ensemble version) | Confirmed | 18' |
| 1978 | Concerto for Trombone and Orchestra | Confirmed | 18' |
| 1981 | Overture: In Praise of Folly | Confirmed | 8' |
| 1982 | Cantata · chorus | Confirmed | 11' |
| 1982 | Movements for Cello and Orchestra | Confirmed | 20' |
| 1983 | An Eastman Overture | Confirmed | 8' |
| 1983 | Serenata | Confirmed | 14' |
| 1984 | Sinfonia No. 1 | Confirmed | 13' |
| 1987 | Poem for Mezzo-Soprano and Mixed Septet | Confirmed | 18' |
| 1990 | Folksongs for Orchestra | Confirmed | 15' |
| 1990 | Sinfonia No. 2 | Confirmed | 16' |
| 1991 | Poeme for Violin and Orchestra | Confirmed | 19' |
| 1994 | Orpheus | Confirmed | 18' |
| 1996 | Lilacs for voice & orchestra | TBD | 15' |
| 1997 | Pageant and Proclamation | Confirmed | 11' |
| 1999 | Tangents for Chamber Orchestra | Confirmed | 8' |
| 2000 | Canvas for Wind Ensemble, Voices and Chorus · chorus | Confirmed | 20' |
| 2002 | Sinfonia No. 3 | Confirmed | 17' |
| 2003 | Abu for Soprano and Baritone Narrators and Chamber Ensemble | Confirmed | 7' |
| 2003 | Icarus in Orbit | Confirmed | 4' |
| 2005 | Foils for Orchestra: Hommage à Saint George | Confirmed | 12' |
| 2005 | Hoopla: A Touch of Glee | Confirmed | 9' |
| 2008 | Da Camera for Piano Trio and String Orchestra | Confirmed | 15' |
| 2009 | Concerto for Violin and Orchestra | Confirmed | 23' |
| 2012 | Sinfonia No. 4 “Strands” | TBD | — |
| 2016 | Sinfonia No. 5 “Visions” · chorus | TBD | — |