Book excerpt: The papers collected in this volume apply principles of phonology and morphology to the Germanic languages. Phonological phenomena range from subsegmental over phonemic to prosodic units (as syllables, pitch accent, stress). Morphology includes properties of roots, derivation, inflection, and words. The analyses deal with language-internal and comparative aspects, covering the whole (European) range of Germanic languages. From a theoretical perspective, most papers concentrate on constraint-based approaches. Crucial to those theories are principles of the phonology-morphology interaction, both within and between languages. The well documented Germanic languages provide an excellent field for research and almost all papers deal with aspects of the interface.