This chapter develops the first dimension of the model. By examining how musicians/improvisers (cultural semiotic subject) develop psychologically, how they construct their visions of themselves and the world in which they live, and what dynamics and processes organize these interactions and movements, the chapter takes as its starting point Vygotsky’s psychology (1991, 1997, 2007, 2008, 2014), which is central to this proposal. The core of this discussion is based on the idea that human psychological functions emerge from Self-Other social interactions within the sociocultural contexts in which individuals live. We become subjects in relation to others and through others. Creativity is no exception. As a social phenomenon, creativity can be understood as a psychological function that develops through the same processes and dynamics that characterize other functions. During the creative process of free improvisation, musicians engage in sound dialogues. This chapter explores the nature of these sound dialogues and presents the key aspects of this process. It discusses how musicians construct narratives and then examines the forms of resistance influencing the improvised creative process as these dialogues unfold. The chapter concludes by demonstrating how the socially creative mind is reflected in Free Improvisation.