This issue of Plainsong and Medieval Music honours the memory of a former vice-president of the Plainsong and Medieval Music Society, Dom Jean Claire, OSB, who died on 25 April 2006. A monk of Solesmes, he was appointed choirmaster of his abbey, director of Paléographie musicale and editor of Études Grégoriennes in 1971 as the successor to Dom Joseph Gajard. These responsibilities and his own scholarly work made him one of the most important figures in the chant world.