This volume brings together a range of approaches to linearization in phonology and its interfaces with phonetics and syntax. Drawing on a wide range of theoretical perspectives and methodological approaches, the chapters explore the viability of accounts of linear order at different levels of representation, from the subsegmental and segmental domain to larger syntactic units. A series of central issues revolving around sequencing and phonological movement form a common theme across the book: these include the nature of rules deriving precedence relations; the indispensability of formal devices determining linearization; the role of phonology in the surface order of morphemes in a word and of words in a sentence; the size and shape of constituents subject to dislocation; and the extent to which (re)arrangement can result in structural optimization. Each chapter engages with a subset of these topics, either addressing broad theoretical questions and challenges to well-established notions, or exploring specific phenomena and patterns. Throughout the volume, the authors demonstrate that sequencing phenomena can be explained without recourse to underlying linear order. The variety of formal frameworks employed in the chapters reflects the rich toolset through which linearization in phonology can be formalized.