Final answer:
Latin songs are usually sung in Spanish or Portuguese because these languages evolved from Latin and became dominant in Latin America.
Step-by-step explanation:
The reason Latin songs are usually sung in Spanish or Portuguese is because these two languages evolved from Latin. Latin, the language of the Roman Empire, was spoken across Europe. As time went on, Latin evolved into the Romance languages, which include Spanish, Portuguese, French, Italian, and more. Spanish and Portuguese specifically became the dominant languages in Latin America due to the colonization by Spain and Portugal in the region.