sentences:  He dedicated himself to chamber music, undertook concert tours with the violinist Jacques Thibaud and George Enescu and appeared frequently in a duo with Eugène Ysaÿe.In 1911 he made the first of a number of tours of the United States.He was mobilised in the course of the First World War, around which time he produced the first of his published compositions, the "Six Préludes pour Piano" and the "Six chansons à Païney".