A solis ortus cardine

"A solis ortus cardine" is a poem by Coelius Sedulius, recounting Christ's life from his birth to his resurrection. Its 23 verses each begin with a consecutive letter of the Latin alphabet, making the poem an abecedarius. It is one of the oldest parts of the Roman Catholic liturgy, with two hymns formed from the first seven and four later verses. There have been monastic translations into Anglo-Saxon and later translations into other languages, most notably the German versification of Martin Luther during the Reformation. The original Latin hymn and Luther's translation have been set for chorus and organ by many composers including Dufay, di Lasso, Praetorius, Palestrina, Scheidt, de Grigny and Bach.

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