Eurovision fans know him for writing four wonderful entries for Spain, and one of those is an evergreen he will always be remembered for by everyone: Eres Tú.
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Below is a wonderful video of Johnny Mathis singing Eres Tú with Calderón at the piano.
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The 1989 entry Nacida Para Amar is also known as Amante Del Amor, a version with different lyrics which has been recorded by several Latin American singers most notably Luis Miguel.
Calderóns Eurovision entries:
1973 - Eres Tú - Mocedades (2nd place)
1975 - Tú Volverás - Sergio Y Estibaliz (10th)
1985 - La Fiesta Terminó - Paloma San Basilio (14th)
1989 - Nacida Para Amar - Nina (6th)
More about Eres Tú, #8 in the top 10 most covered Eurovision songs in this Eurocovers post.
Juan Carlos Calderón website.