Fiebre de juventud

Fiebre de juventud (English: "Youth Fever"), also known as Romance en Ecuador (English: "Romance in Ecuador"),[1][2] is a 1966 Mexican-Ecuadorian musical comedy film directed by Alfonso Corona Blake[3] and starring Enrique Guzmán, Begoña Palacios, Rosa María Vázquez and Fernando Luján.

[2][4] Carlos and Luis drop out of school and try to make it big with a music group, with considerable success.

They travel to Ecuador and they meet two sisters, the beautiful Rita and the prudish Silvia.

Luis tries to convince Carlos to woo Silvia, but the two couldn't treat each other worse.

[1] It was one of several Mexican film productions that were shot on Ecuador,[2] alongside films such as Peligro, mujeres en acción, Cómo enfriar a mi marido, 24 horas de placer, and Caín, abel y el otro.