Abstract
This article examines the category of identity in the teachings of Aleksei Losev. Many of the points made in Losev’s scientific articles played an important role in the development of musicology, in part through the work of B. Asafiev. This article traces the relationship between identity as a category of philosophy, of aesthetics and as a category of music. This approach captures the phenomenon in its entirety and avoids opposition between the various elements of the category of identity in discussions about the nature of its manifestation in music. Following this analysis, the author defines the category of identity in music as well as its principles, functions, and forms.