Fruko y sus Tesos is a musical group from Colombia, led and directed by Julio Ernesto Estrada, known as Fruko. Fruko (July 7, 1951) is a composer, producer, performer and conductor, was born in Medellin, Colombia.
In 1963 he signed his first contract to make an errand boy at Discos Fuentes, legendary company dedicated especially to Latin music and founded by Antonio Fuentes in 1934. In 1965, he became part of the Corraleros of Majagual, with whom he recorded for seven years. At first he used the nickname of Joselito, but then he started calling Fruko by its resemblance to a character in a canned ad that said “Ketchup Fruco (original name of the product) … the secret flavor” .