El grito de América

This song was written by Sandra Beigbeder, Marian Beigbeder and Beatriz Beigbeder as can be seen at the Biblioteca Nacional de España at http://datos.bne.es/edicion/bipa0000022621.html .

Note that some sources say the writer is Manuel Alejandro (the father of Sandra, Marian and Beatriz), but the BNE should be preferred as a more reliable source of information.