Sergio y Estíbaliz took part in the Eurovision Song Contest 1975 and reached 10th place with their greatest hit " Tú volverás " , released in English as '' You 'll Return '' . In the same year Estíbaliz and Sergio married . Until 1993 the duo had numerous successes in Spain and Latin America
Eurovision Song Contest 1975
Eurovision Song Contest 1975
Estíbaliz Uranga