Quisqueyanos refers to the people of Quisqueya, which is an indigenous Taíno name for the island of Hispaniola, now shared by the Dominican Republic and Haiti. It's a poetic and patriotic term often used to refer specifically to Dominicans.
In the song, Juan Luis Guerra, a proud Dominican, uses this word to directly address his fellow countrymen, asking "¿Cuándo alzaremos la frente, Quisqueyanos?" (When will we raise our heads, Dominicans?). It evokes a strong sense of national identity and a call to action for his people.
Juan Luis Guerra's "Si Saliera Petróleo" is a really thought-provoking song about the Dominican Republic, which he affectionately calls "Quisqueya." He starts by describing his "pueblo enano" [dwarf town] with the "fe de un continente" [faith of a continent], but also facing a lot of hardship, with millions of "indigentes, analfabetos y hermanos" [indigent, illiterate, and brothers]. He's asking, "¿Cuándo alzaremos la frente, Quisqueyanos?" [When will we raise our heads, Quisqueyans?]
The main idea, though, comes in the chorus: "Si de aquí saliera petróleo" [If oil came out of here]. He imagines all the good things that could happen if the Dominican Republic had oil like Kuwait – no hunger, no sickness, schools, and light. But then he brings us back to reality with a blunt, "Mi panita, no sale na'" [My friend, nothing comes out]. He's saying that while oil would be great, the real change comes from within. He suggests that if they built lighthouses for education, fought together for society, talked less, and resolved more, then "Sería Quisqueya un país mejor" [Quisqueya would be a better country]. It's a powerful message about hope and self-reliance, even when facing tough times.