Before he was thirty, Olivier Messiaen had written the work that established his worldwide reputation asa visionary composer for the organ, La Nativité du Seigneur (The Birth of the Saviour). A synthesis of hisinnovatory compositional style, it is rich in colourful harmonies and precisely noted but flexible rhythms,many derived from Hindu tâlas and from the metre of Gregorian chant. This musical commentary on theChristmas story is divided into nine movements evoking timeless grace, beauty, radiance, exhilaration,and majesty. Tom Winpenny is Assistant Master of the Music at St Albans Cathedral, the oldest site ofcontinuous Christian worship in Britain.