As a complex human activity, music perception is naturally an area of interest to cognitive psychology. However, introducing this domain of inquiry raises anew basic questions about how best to formulate the questions to be investigated, how to compile observations that bear on these questions, and finally how to devise a descriptive framework for communicating the results obtained. In general terms, the aim is to describe the human capacity for internalizing the structured sound materials of music by characterizing the nature of internal processes and representations. In making choices about the most fruitful kind of analysis, a variety of considerations must be weighed