Though it may not be immediately obvious why articles on topics from such distantly removed areas of western Europe - the Iberian peninsula and southern Italy - should appear in the same volume (the fourth collection by Roger Reynolds), the materials covered illustrate that they are indeed closely related, both in their differences and their similarities. Both peninsulas had their own indigenous liturgies and music (Old Spanish and Beneventan), distinctive written scripts (Visigothic and Beneventan), and legal and theological traditions, and repeatedly these worked their influence on other...