Puer Pacis. Puer Pacis (The Dulwich Peace Carol) was jointly commissioned by Dulwich College and Dulwich College International, with the generous support of the Alvarez Family. First performed by the Choir of Dulwich College, directed by Richard Mayo, on 6 December 2019 at Southwark Cathedral. Scored for unaccompanied divisi choir, the text asks what can we offer to the baby in the manger when it is Mary's gift to humanity that is the greatest of all.