I have attempted to draw together two concerns in this work. First, I have determined the basic requirements of an autosegmental-style phonology: the type of structures required and the relations between them. Second, I have been concerned to present a declarative approach to phonology which fulfills these requirements, drawing on the techniques of the developing unification grammars. The result, Attribute Value Phonology, shows that it is possible to balance these demands to the mutual benefit of each area of enquiry.