In 1916 a childhood friend, Raymonde Linossier (1897–1930), introduced Poulenc to Adrienne Monnier's bookshop, the "Maison des Amis des Livres". There he met the "avant-garde" poets Guillaume Apollinaire, Max Jacob, Paul Éluard and Louis Aragon. He later set many of their poems to music. In the same year he became the pupil of the pianist Ricardo Viñes. The biographer Henri Hell comments that Viñes's influence on his pupil was profound, both as to pianistic technique and the style of Poulenc's keyboard works. Poulenc later said of Viñes: