Máximo Antonio del Rosario (born November 3, 1955), known as Toño Rosario is a merengue singer well-known in his native Dominican Republic and Latin America. He is often mocked (even by himself) for his "ugly" looks and he even adopted the nickname "El Cuco" (The Boogeyman). Rosario was born in Higuey, a province in the Dominican Republic. Since childhood, he and his brothers showed interest in music, even playing self-created instruments like bottle caps, plastic containers, and others.

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