While all types of musical works have been affected by the advent of recording, it has not always been in the same way or to the same extent. The aim of this paper is to delve into these differences and to clarify the role played by recording in defining the ontological identity of musical works. Starting from the discussion of some ontological approaches, it considers music recording in light of the conceptual tension between its meaning as a document of a (...) performance of a pre-existing musical work and its meaning as a construction of an autonomous musical work. It argues that the diverse roles that recording can play depend not only on a grasp of the ontological identity of works but on an adequate understanding of the (type of) performance to which they refer. An expansion of the “logical space” of the notion of performance is ultimately necessary to account for the ontological identity of musical works, whether documented or constructed through recording. (shrink)