Book excerpt: Vowel Harmony and Correspondence Theory covers the major issues in the generative analysis of vowel harmony and vowel harmony typology. The book offers an economical account of the most prominent features of vowel harmony systems (root control, affix control, dominance, vowel opacity, and neutrality) within the framework of optimality theory, extending the notion of correspondence to the syntagmatic dimension.The book contains a typological overview of vowel harmony patterns, an introduction to the basics of optimality theory including some of its most recent extensions and detailed studies of harmony systems in 10 languages from a variety of language families.