Omnis Terra (Jubilate Deo) Treble Voices - Dan Forrest
Omnia Sol SSA - Z. Randall Stroope
Offertory SSA - Arr. Craig Courtney
O Pastorelle, Addio SSA - Umberto Giordano, Arr. Emile H. Serposs
OMG! (#twitterlieder) - James Eakin III
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
Omnes Credere SATB - Jim Papoulis, Ed. Sophia Papoulis
Nada Te Turbe SSAA - Joan Szymko
Oba Ti De SSAATTBB - Jeffrey L. Ames
O Salutaris Hostia SSAA - Frank Ferko
O Mary, Don't You Weep TTB - Arr. Rollo Dilworth
Oba Se Je - Christopher Aspaas
Of The Father's Love Begotten TTBB - Arr. Edwin T. Childs
O Salutaris Hostia SATB - Pierre De La Rue
Of A Rose, A Lovely Rose (Magnificat) - John Rutter
O, She Doth Tecah The Torches To Burn Bright SSAATTBB - Eriks Esenvalds
N.Y.C. SATB - Arr. Mark Brymer
O Magnum Mysterium TTBB - Morten Lauridsen
O Salutaris Hostia SSAA - Erik Esenvalds
O-Yo-Yo - Arr. Stephen Hatfield
O Magnum Mysterium TTBB - Manolo Da Rold
