 For five years, from 1928, he worked with Delius, taking down his new compositions from dictation, and helping him revise earlier works.Together they produced "Cynara" (a setting of words by Ernest Dowson), "A Late Lark" (a setting of W. E. Henley), "A Song of Summer", a third violin sonata, the "Irmelin" prelude, and "Idyll" (1932), which reused music from Delius's short opera "Margot la rouge", composed thirty years earlier.McVeagh rates their greatest joint production as "The Songs of Farewell", settings of Whitman poems for chorus and orchestra, which were dedicated to Jelka.