The present article advances the notion of musical topography to describe the engagement between a practitioner and the musical instrument, emphasizing its developmental character. From the point of view of semiotic anthropology, it is suggested that the development of such a practical engagement is guided by expressivity, and that the instrument appears not only as an extension of the body, but participates in the generation of a unitary field, where bodily motion, the instrument and the tonal space are intertwined. The development of lived musical practice draws its force from a situated tradition that consists of normative, structural and stylistic elements, and of a constellation of genres and values shaped and reshaped by generations of practitioners. Finally, it is emphasized that the notion of musical topography brings back to musical praxis its long neglected imaginative dimension.