Sonata no. 9 [for piano] : : [op. 134], Ychwanegu i'r clipfwrdd A3/46. Ffeil [1989]. Rhan oThe Alun Hoddinott Archive, Ink score (reduced photocopy).
Sonata no. 12 for piano : : [op. 149], Ychwanegu i'r clipfwrdd A3/52. Ffeil [1994]. Rhan oThe Alun Hoddinott Archive, Ink score.