During Holy Week, especially Good Friday, western Christians throughout the world sing this beloved hymn, O Sacred Head, Now Wounded. Written in German by Paul Gerhardt (1607-1676), it is based on a hymn by St. Bernard of Clairvaux (1091-1153). The tune was composed by Hans Leo Hassler (1564-1612). The tradition of German chorales, bequeathed to us by the Lutheran churches, bears considerable similarity to that of the Genevan Psalms. Repeated initial phrases, irregular metres, and a plethora of feminine endings are the signs of a shared continental heritage.