The present dissertation approaches the music's topic in the Spanish cinema of the years 40 through documental sources. After a storage and classification in digital format, a tool has been developed for its administration and classification of the same ones.
These sources have allowed us to generate a speech in which it has been kept in mind diverse aspects that directly affect to music's composition for cinema: historical, political, economic and social context.
Once carried out the pertinent analyses, it has been approached the optic different low topic directly, obtaining a portrait of cinema musician's profession and their repercussion as much in the industry as in the society.