"When A Child Is Born" is a popular Christmas song. The original melody was "Soleado", a tune from 1974 by (alias Zacar), composer for Italy's Daniel Sentacruz Ensemble, and Dario Baldan Bembo. The tune was based on Damicco's earlier tune "Le rose blu" published in 1972. The English language lyrics were written a few years later by Fred Jay (who wrote many hits for Boney M such as Rasputin and Ma Baker). They do not make specific mention of Christmas but the importance they attach to looking forward to the birth of one particular child somewhere, anywhere, suggests a reference to the birth of Jesus Christ, and the citing of "a tiny star" that "lights up way up high" may allude to the Star of Bethlehem. Fred Jay's lyrics have been sung by many artists, most successfully by Johnny Mathis in 1976.

"Soleado" is used in the 1975 Argentinean film Nazareno Cruz y el lobo (The Love of the Wolf), and it is credited as "Theme From the Motion Picture 'The Love of the Wolf'" on Mathis's album Johnny Mathis Sings the Movie Greats (CBS). Artists who have performed the song include:

The best known version of the song is probably the Jack Gold produced version for Johnny Mathis. Entitled "When A Child Is Born (Soleado)" with B-side as "Every Time You Touch Me (I Get High)", it became Johnny Mathis' sole number one single in the UK Singles Chart, spending three weeks at the top of the chart in December 1976, and selling 885,000 copies. In the US, it appeared in the Record World survey in both the Christmas seasons of 1976 and 1977, reaching a maximum position of No. 123, and racking up 10 chart weeks. In addition, Mathis re-recorded the song as a duet with Gladys Knight and the Pips. This version reached Record World No. 137 during the Christmas season of 1980, and the UK Singles Chart at No. 79.

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