The Rajah's diamond : : an opera in one act, op. 99,
- A6/4.
- Is-gyfres
- 1979 /
Scores, pencil sketch and libretto.
libretto by Myfanwy Piper, based on a story by R. L. Stevenson.
Dangos 6 canlyniad
Disgrifiad archifolA contemplation upon flowers : : three songs for soprano and orchestra, op. 90,
- A7/7.
- Ffeil
- 1976 /
Ink full score and vocal score, both dated June 1976. Typescript copies of the poems are included, and a photocopy of the full score.
poems chosen by Myfanwy Piper.
The trumpet major : : an opera in three acts, [op. 103],
- A6/5.
- Is-gyfres
- 1980-1981 /
Scores, pencil sketch, libretto and related material.
libretto by Myfanwy Piper, based on the novel by Thomas Hardy.
What the old man does is always right : : opera in one act, op. 93,
- A6/3.
- Is-gyfres
- [1977]-1979 /
Full score, pencil sketch, libretto and camera script.
libretto by Myfanwy Piper.
- BD/2.
- Ffeil
- [1979x1992].
Papers, [1979x1992], relating to a proposed opera on an adaptation of Balzac's 'Le Colonel Chabert', comprising letters and drafts of the libretto by Myfanwy Piper.
The legend of St. Julian : : [cantata for narrator, mixed chorus (SATB) and orchestra],
- A5/45.
- Ffeil
- [1987] /
Ink full score; two ink vocal scores (one a hire copy, bound by Oxford University Press); a pencil sketch; and handwritten and typescript copies of the text, with amendments.
words: Myfanwy Piper.