Performing piety. Musical culture in medieval English nunneries. By Anne Bagnall Yardley. (The New Middle Ages.) Pp. xvii+326 incl. 10 ills, 20 musical examples and 8 tables. New York–Basingstoke: Palgrave Macmillan, 2006. £40. 978 1 4039 6299 5 - Eichner, Barbara (The journal of ecclesiastical history, 2009)