The document discusses Peru's National Day of Criolla Music, which is celebrated annually on October 31. Criolla music originated as a genre that combines African, Spanish, and Andean influences. It started being celebrated officially in 1944 when the Peruvian government announced it as a day to honor criolla music as part of Peruvian folklore. The most popular style of criolla music is the Marinera dance, considered the national dance of Peru. The Spaniards founded their capital in Lima on the coast of Peru, where criolla culture took deepest root.