 World War I brought an end to many hopes.At the Polish Victims Relief Fund concert, July 1915, he performed Paderewski's "Polish Fantasy" (piano and orchestra) under Thomas Beecham, and played Chopin.After the war, in May 1919 he and the violinist Jelly d'Arányi gave a memorial sonata concert at the Wigmore Hall for the Irish-Australian musician Frederick Septimus Kelly, an Oxford graduate killed in 1916.