Despite the recent advances in the integration of lexical tone and intonation in phonological theory, all too often the study of intonation and the study of lexical tone are viewed as belonging to different research traditions. This collection strengthens the integrated approach by studying tone and intonation within a common framework, and by tracing their interaction in specific prosodic systems. Some papers deal with the structural properties of lexical tone and intonation, while others focus on the historical development of prosodic systems. The volume also includes a re-evaluation of a classic paper on the typology of tone rules, and a survey of features signalling question intonation in African languages.