Recent publications on the Star Wars saga underline the flip side of sound improvement: the plethora of sound effects is said to eclipse the orchestral score, sometimes to a point of inaudibility – in this second episode in particular. In their interviews, the composer and the sound designer themselves allude to a constant rivalry. This, our article questions to what extent and in which way the interactions between music and sound effects succeed in exceeding a mere conflicting alliance. We will also bring out what significations they bear regarding the images and the dialogue. Indeed, the fluctuation of primacy of sound effects or music is hardly insignificant regarding the narration and the dramatic situation in which they occur. Furthermore, we can notice a musicalization of sound effects which, far from taking on a mere illustrative function or just displaying a “realistic effet,” are truly heard for themselves.