Doctoral thesis. Cinematographic language is an artistic and communicative language that is certainly complex. The starting point of the work is that the presence of music in films defines part of the ontological, narrative, expressive, dramaturgical, psychological or even historical mechanisms with which the cinematographic language articulates its diegesis. Research is carried out around the study of music present in cinema, focusing on the cinematographic work that the Catalan director Pere Portabella made in the period between 1967 and 1976. Portabella, born in Figueres in 1927, developed his activity as a film maker from the second half of the 1960s. From a synchronic point of view, the episteme of the “contemporary image” combines, within itself, the duality of iconic value and sound and musical value. Thus, although this work studies music in cinema, and the aesthetic and formal relationship between image and music as a whole of cinematic expression, this is also a work on “image”, in the which tries to explain this fact: how music is an element that belongs to the mechanisms of the construction of the modern and contemporary image.