The practice of gestural electronic music performance provides a valid context for artistic or practice-based investigations in the field of ’NIME.’ To this end, the material and conceptual conditions for the development of performance pieces using gestural actions need to be explored. The use of digital musical instruments and concepts for the expressive performance with digital sounds leads to questions of perception—by the musician and by the audience—of movements and actions, the body, the instruments, and of their affordances. When considering this performance mode as a topic for investigation, it becomes evident that in order to be based on practice, research in this field needs a definition and differentiation that helps to identify the specific perspectives that are only made possible through application in an actual artistic practice.