| 1928 | Serenata per a orquestra de corda, op. 1 | Confirmat | 10' |
| 1931 | Obertura de The School for Scandal, op. 5 | Confirmat | 8' |
| 1933 | Music for a Scene de Shelley, op. 7 | TBD | 8' |
| 1936 | Simfonia núm. 1 in One Movement, op. 9 | Confirmat | 20' |
| 1938 | Adagio per a cordes, op. 11 | Confirmat | 8' |
| 1938 | First Essay per a orquestra, op. 12 | Confirmat | 8' |
| 1939 | Concert per a violí, op. 14 | Confirmat | 24' |
| 1942 | Second Essay per a orquestra, op. 17 | Confirmat | 10' |
| 1943 | Commando March (versió orquestral) | Confirmat | 4' |
| 1944 | Capricorn Concerto, op. 21 | Confirmat | 14' |
| 1944 | Simfonia núm. 2, op. 19 | Confirmat | 26' |
| 1945 | Concert per a violoncel, op. 22 | Confirmat | 28' |
| 1945 | Horizon | Confirmat | 5' |
| 1947 | Knoxville: Summer of 1915, op. 24 | Confirmat | 16' |
| 1947 | Medea — Cave of the Heart (ballet complet) | Confirmat | 29' |
| 1947 | Medea: Suite per a orquestra, op. 23 | TBD | 23' |
| 1952 | Souvenirs (Ballet Suite), op. 28 | TBD | 19' |
| 1954 | Prayers of Kierkegaard, op. 30 · cor | TBD | 18' |
| 1955 | Medea's Meditation and Dance of Vengeance, op. 23a | Confirmat | 13' |
| 1958 | Intermezzo de Vanessa | TBD | 4' |
| 1958 | Vanessa, op. 32 · òpera · cor | Confirmat | 130' |
| 1959 | A Hand of Bridge, op. 35 · òpera | TBD | 9' |
| 1960 | Die Natali — Chorale Preludes for Christmas, op. 37 | TBD | 16' |
| 1960 | Tocata Festiva, op. 36 | TBD | 14' |
| 1961 | Chorale Prelude on Silent Night (de Die Natali) | Confirmat | 2' |
| 1962 | Andromache's Farewell, op. 39 | TBD | 12' |
| 1962 | Concert per a piano, op. 38 | Confirmat | 26' |
| 1963 | Night Flight, op. 19a | TBD | 8' |
| 1966 | Antony and Cleopatra, op. 40 (òpera completa) · òpera · cor | Confirmat | 120' |
| 1966 | Antony and Cleopatra: dos escenes | TBD | 16' |
| 1971 | Fadograph of a Yestern Scene, op. 44 | TBD | 7' |
| 1971 | The Lovers, op. 43 · cor | TBD | 31' |
| 1978 | Canzonetta per a oboè i orquestra de corda, op. 48 | Confirmat | 8' |
| 1978 | Third Essay per a orquestra, op. 47 | TBD | 14' |