O Lord, Thou Hast Searched Me (4-079)
O Love Divine (4-060)
O Love So Small (0-759)
O Love that Casts Out Fear (2-471)
O Love, How Deep (6-173)
O Lovely Nightingale (0-934)
O Lovely Peace (1-014)
O magnum mysterium (1-551)
O magnum mysterium (2-260)
O Man of Sorrow (5-661)
O Mary, Don't You Weep (6-174)
O Mistress Mine (1-716)
O Morn of Beauty (2-839)
O Music (4-587)
O Music (4-638)
O Nata Lux, Light Born of Light (5-926)
O Night Divine (3-625)
O No, John (0-413)
O Praise the Name of Christ, the Lord (1-670)
O Rest in the Lord (1-849)
O Rest in the Lord (2-322)
O Sacred Feast (5-565)
O Sacred Head, Now Wounded (5-966)
O sacrum convivium (5-461)
