 He and Yehudi Menuhin (his second wife's brother-in-law) gave the first performance of William Walton's Violin Sonata, at Zürich on 30 September 1949.His playing was heard in Richard Addinsell's "Warsaw Concerto" from the soundtrack of the 1941 film "Dangerous Moonlight".However, his hands were not shown, and he preferred to be uncredited as he did not think that being associated with film music would help his career.