O Radiant Dawn SATB (The Strathclyde Motets) - James MacMillan
O Nata Lux - Ivo Antognini
O Quam Tristis (Stabat Mater, No. 3) - Francis Poulenc
Nda Wana SATB - Arr. Michael Barret
O Quam Suavis Est SATB - Ivo Antognini
Oh Happy Day SATB - Arr. Mark Hayes
Oh Had I Jubal's Lyre SATB - Handel, Arr. Michael Mauldin
Oh Christmas Tree SATB - Arr. Francisco Nunez And Jim Papoulis
Oh, Chanukah-Y'Mei Hachanukah SATB - Arr. Robert Applebaum
Nativity Carol SATB - John Rutter
O Sing Rejoice! SATB - Handel, ed. Patrick M. Liebergen
O Praise the Mighty Lord (Joshua) SATB - Handel, ed. Patrick M. Liebergen
O Music, Thou Most Lovely Art SATB - Johann Jeep, Ed. Ray Robinson
O Music SATB - David L. Brunner
O Mistress Mine, Where Are You Roaming - Emma Lou Diemer
O Sifuni Mungu SATB - Arr. Roger Emerson
On A March Day SATB - Richard Burchard
On A Beach At Night alone (A Sea Symphony) SATB - Ralph Vaughan Williams
Omnis Terra! (Jubilate Deo) SATB - Dan Forrest
Offertorium (War Requiem) - Benjamin Britten
O Meu Maracatu SATB - Daniel Afonso
Ogo Ni Fun Oluwa! SATB - Rosephanye Powell
O Setting Sun (A Whitman Triptych) - David Conte
Nanie - Johannes Brahms
