The name points to the Cerro del Fortin, the hill above Oaxaca City that hosts the open-air auditorium of the Guelaguetza, Oaxaca's famous July folk festival. This particular clip arrived on the soundboard without credits, so its exact recording and performer are undocumented. Short regional music clips like this one tend to circulate among creators who want an instant Oaxacan flavour without a long track. Its short length makes it easy to drop into edits, which is why it keeps appearing in festival and travel videos.