Hail Mary
During the Renaissance, the Hail Mary very often set to music by composers, like Jacques Arcadelt, Josquin Desprez, Orlando di Lasso, and Giovanni Pierluigi da Palestrina.  However, at this time (before the Council of Trent), there were still different versions of the prayer. Because of this, some of the earlier Renaissance pieces have different words than today's Hail Mary.  For example, Josquin Desprez actually created more than one musical version of the Ave Maria.