Over the River and Through the Woods SATB - arr. James Eliot
Our Story 2-Part - Mark Burrows
One Vision SATB - arr Philip Lawson
One Step He Leads TTBB - Pepper Choplin
One Short Day SAB - arr. Roger Emerson
On this Winter Night SB - arr. Becki Slagle Mayo
On This Day Earth Shall Ring SATB - arr. Lloyd Larson
On This Day Earth Shall Ring SATB - arr. David Schmidt
On the Air SSATB - Cecilia McDowall
On Earth As It Is In Heaven SATB - arr Rene Clausen
On Each Continent We Worship SATB - Victor C. Johnson
Old Time Rock & Roll TBB - arr. Kirby Shaw
Oh, Didn't It Rain 2-part - arr. Douglas E. Wagner
Oh What A Beautiful City SATB - arr. Eurydice V. Osterman
Offetorium SATB - Michael Haydn
O vos omnes SATB - Tomas Luis de Victoria, ed. Paco Marmol, Manolo Casuas
O sacrum convivium SAATTB - Tomas Luis de Victoria, ed. James Gibbs
O praise the Lord SATB - Uzee Brown, Jr
O Lord, Your Word Has Come to Us SATB - Joseph M. Martin
O Holy Night SSAA - arr. Jay Althouse
O Holy Night SSA - arr. John Leavitt
O come, O Come, Emmanuel SATB - arr. Andrew Carter
O Come, O Come Emmanuel SATB - arr. Kevin St. Clair
Nunc Dimittis SATB - Eriks Esenvalds
