This attempt at writing a social history of recording and sound technology industries from 1949 to 1963, focuses on the relations between different kinds of players intertwined in the sphere of domestic production of records and local assembly of sound hardware in Colombia. It departs from unpacking the idea of a Golden Age in reference to the period of study, in order the describe and analyse the period through evidence collected during rigorous, systematic and exhaustive archive work, including journalistic and institutional primary sources of various kinds, and qualitative as well as quantitative data. The analysis is guided by a social history work plan delineated by Eric Hobsbawm, which begins by sketching a picture of the relational complex studied and understanding its movement through time, is followed by the abstraction of patterns of change and continuity, and finally by the analysis of social tensions involved in the historical process. The work gives special attention to: changes in mode of production when contrasting the 1949-1963 era with the previous two decades; gradual changes in mode of production during the 1950s; changes associable to effects of a mid1950s economic crisis in the country; the relations between key cities Medellín, Bogotá, Cartagena and Barranquilla; and to the different sorts of tensions between players related to the sphere of production.