O Holy Night of Wonder
O Little Town of Hackensack
O Lord of Life
O Lord, Support Us All the Day Long
O Magnum Mysterium
O Mary, Where Is Your Baby?
O My Luve's Like a Red, Red Rose
O No John
O No, John
O Savior of the World
O Sifuni Mungu
O Sing a New Song
O Sing Unto the Lord
O Sons and Daughters
O Vos Omnes
O Welcome the Savior
O, No John
Ocean, Sing a Song of Home
Ode For Children's Day
Ode to Music
Of Love
Of the Father's Love Begotten
Oh How Beautiful, This Finely Woven Earth
Oh Shenandoah
Oh Shenandoah and Other American Folksongs
Oh Susanna Stomp
Oh! What A Beautiful City
Oh, Dear! What Can the Matter Be?
Oh, Didn't It Rain
Oh, How Joyfully
