This book draws together pioneering contributions to the study of the processes by which music is generated. In doing so, it redresses a balance in the contemporary literature on the psychology of music which has, to date, concentrated mainly on receptive processes. The 11 chapters, specially commissioned for this volume, cover the generation of expression in musical performance, the problems of synchrony in ensemble performance, the development of children's song, rehearsal strategies of pianists, improvizational skill in trained and untrained musicians, children's spontaneous notations for music, formal constraints on compositional systems, and compositional strategies of music students. The focus throughout is on empirical observation and the development of cognitive theory. The book will be of interest to cognitive and developmental psychologists, as well as to music educators and musicologists, and musicians in general.