[1] His mother, María Ferrer Ripol, originally came from the small Aragonese town of La Codoñera in the province of Teruel.

[5] Domingo eventually performed in zarzuela and opera orchestras as a violinist prior to becoming a professional baritone.

[3] A light-voiced lyric baritone, he was repeatedly encouraged to study in Germany to be a Wagnerian heldentenor, but he did not want to live so far away from his family.

[3] He spent the years of the Spanish Civil War (1936-1939) almost trapped in Zaragoza performing in local theaters as part of the zarzuela company, Teatro Ambulante en Campaña.

[2] After the war, he moved with the company to Madrid, where he appeared with great success in Pablo Luna's Molinos de viento.

[4] In 1946, as part of Moreno Torroba's zarzuela company, they embarked for Mexico, eventually taking with them their two children, Plácido and Mari Pepa.

[4] After that they formed their own zarzuela troupe, the Domingo-Embil Company,[1] and for more than twenty years they toured around performing in the best theaters in the Americas, including in New York.

[3] In a 1958 article, a leading Mexican theatrical critic remarked on how the "veteran baritone" Domingo had become "an excellent comic bass.

[1] His last appearance on stage was on 11 January 1975 at the Liceu in Barcelona in Amadeo Vives' zarzuela Doña Francisquita, conducted by his son Plácido.

Ángel Anadón, director of the Teatro Principal de Zaragoza, later remembered him as "a very versatile baritone who knew all the zarzuelas.