The musical group that appears in this film, La Pandilla, had two incarnations. This Puerto Rican film is the second and final film made with the second incarnation of the group - the first was titled 'Operación Alacrán', also shot in Puerto Rico. The first incarnation appeared in one film,
En un mundo nuevo (1972).
Mari Blanca Ruíz Martínez and
Francisco Javier Martínez were the only members of the musical group to appear in all three films.
