On July 1, 1907, Marcel Proust invited a few of his friends to a private concert he was hosting at the Ritz Hotel. In a letter he wrote two days later to the composer Reynaldo Hahn, the host described the eclectic nature of the program. Composers of his day were featured side by side with the masters of the past: Fauré, Wagner, Schumann, Chopin, and Couperin. In recreating the recital’s wide range of periods and styles, violinist Théotime Langlois de Swarte and pianist Tanguy de Williencourt also revive the intimacy of the Parisian fin-de-siècle salons and transport us into the fertile musical universe evoked in the pages of Proust’s novel “In Search of Lost Time.”