Britten's 'A Ceremony of Carols' is a masterpiece composed on board ship as Britten returned to England from the U.S.A. in 1948, a touching evocation of boyhood lost but never forgotten. 'A Boy was Born' is a work that first made Britten famous, based on a theme and variations of astonishing ingenuity. The 'Missa Brevis', written for the boys of Westminster Cathedral, is a gem that is some ways looks forward to the 'War Requiem' which came two years later.