In three steps, this paper suggests erecting ingenuity as a tool of investigation: Ethnomusicology in migration contexts, Strategies and tactics, Categorical assignments. Ingenuity is not to be understood as a gap in epistemic devices but as an instrument that unleashes the gaze, as a tool that aims to ensure the accuracy of observation reports, and especially as a generator of indignation that may take us out of our “comfort zone.” A comfort zone is to be understood here as a knowledge configuration that encourages us to think from established categories that assign people to the place provided for them by existing devices, forgetting to take into account the ways these categories are instituted. This leads us to pay attention to the “categorical service” that ethnomusicology’s conceptual frameworks provide to our ways of thinking.