Federico Romero

[5] During that time he also began his writing career, and in 1911, published a long poem, Nochebuena en la Central in the magazine El Telegrafista Español.

In 1943, he performed at the celebrations for the 88th anniversary of the Spanish Telegraph Service with two other telegraphists who also became zarzuela librettists, Pedro Llabrés and Francisco Prada.

Although most of their libretti were original stories, several of them were based on works by Spanish playwrights such as Lope de Vega, Manuel Machado, and Jacinto Benavente.

[12] Although the vast majority of Romero's libretti were written with Guillermo Fernández-Shaw, he also collaborated with other librettists, most notably with José Tellaeche for Pablo Luna's 1941 zarzuela, Calatravas.

He also wrote several libretti on his own, including those for Ernesto Rosillo's 1922 revue, La rubia del Far-West, and Juan Dotras Vila's 1952 zarzuela, Aquella canción Antigua.