<p>In 1896 a young girl called Marie Nordlinger arrived in Paris from Manchester to study painting. Her cousin, Reynaldo Hahn, was becoming known as a composer and performer whose songs were sung in many European drawing-rooms. His close friend Marcel Proust was an aspiring novelist and student of law and philosophy. Their friendship was based on a passion for literature and music. The mainspring of the enduring friendship between Marie and Marce...