Film which follows Salisbury Cathedral's current child choristers over Easter and through the summer term of 2011. The separate boy and girl choirs each contain 16 of the most musically gifted eight-to-13 year-olds in the country. Their role, now as always, is to sing some of the most sublime music ever written in one of Britain's most beautiful buildings. Indeed there are many who believe the chorister's pure, clear, treble voice is the finest instrument in all music. The film spends four months with the choristers as they go about their day-to-day lives, discovering their own history and singing some of the most loved music from a sacred canon spanning six centuries from medieval plainsong to the present day. Under the direction of indefatigable choir master David Halls, they rehearse and perform works by Sheppard, Byrd, Purcell, Handel, Mozart, Stanford, Parry, Alcock and Rutter.