O Sing Joyfully
O Sing Unto the Lord
O Sons and Daughters
O Taste and See
O Voi Che Sospirate A Miglior Note
O Vos Omnes
O Wake and Sing, Good Christians
O Waly, Waly
O Welcome the Savior
O Worship the King
O, No John
Ob-La-Di, Ob-La-Da
Obwisana
Ocean, Sing a Song of Home
Ode For Children's Day
Ode to Music
Of Love
Of the Father's Love Begotten
Oh Come, Emmanuel
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
