O Trinity, Most Blessed Light (0-420)
O vos omnes (0-428)
O vos omnes (2-169)
O vos omnes (3-239)
O Waly, Waly (0-422)
O, My Luve's Like A Red, Red Rose (4-124)
O, No John (5-027)
Ode for St. Cecilia's Day (3-104)
Of Love and High Times (1-233)
Of the Father's Love Begotten (1-234)
Of the Father's Love Begotten (3-812)
Oft In The Stilly Night / All Through the Night (4-351)
Oh My Luve's Like a Red, Red Rose (0-398)
Oh, Dear! What Can the Matter Be? (3-814)
Oh, Dear! What Can the Matter Be? (5-451)
Oh, How Beautiful the Sky (3-205)
Oh, Love So Cruel (0-397)
Old Joe Clark (2-170)
Old Music for Quiet Hearts (3-698)
On a Frosty Winter's Night (3-923)
On a Morn All Crisp and Cold (6-164)
On Christmas Day (3-008)
On the Mountainside (6-221)
On the Plains, Fairy Trains (3-030)
