This paper first appeared in Anglicans & Catholics in Communion, Special Edition of The Messenger of the Catholic League, April-August 2010). It was published again in two parts in Bulletins 272 & 273 of the Hymn Society of Great Britain and Ireland, Volume 20, 2012.
It considers the place of English metrical hymnody in the Mass of the Roman Rite, and the science of their selection and deployment. The title is a phrase of Rowan Williams'.
The article can be read and downloaded here.