Born in Santander , he was the author of " Eres tú " , which , performed by Mocedades , came second in the Eurovision Song Contest 1973 . It was an important hit in several countries . He wrote another three Eurovision entries : " Tú volverás " by Sergio y Estíbaliz in 1975 , " La fiesta terminó " by Paloma San Basilio in 1985 , and " Nacida para amar " by Nina in 1989 ; as well as an entry for the OTI Festival : " Amor de medianoche " , which ended up runner-up in 1975 performed by Cecilia . He also wrote music for several movies , including the horror films '' Vengeance of the Zombies '' ( 1973 ) and '' Blue Eyes of the Broken Doll '' ( 1974 ) . In 1968 he won an Ondas Award . He wrote songs for artists like Luis Miguel ( who received a nomination for Song of the Year at Latin Grammy Awards in 2000 with a Calderón song , " O Tú o Ninguna " ) , Julio Iglesias , Joan Manuel Serrat , Donald Byrd , Stéphane Grappelli , Bill Coleman , Pedro Iturralde , Herb Alpert , Chayanne , Nino Bravo , Camilo Sesto , Paloma San Basilio , Rocío Dúrcal , David Bustamante , Mari Trini , José José , Manuel Mijares , Alejandra Ávalos , María Conchita Alonso and Myriam Hernández , among others
Eurovision Song Contest 1973
Eurovision Song Contest 1973
Juan Carlos Calderón