Onward I Go 3-Part Mixed - Joyce Eilers Bacak

Only in Sleep SAB - Eriks Esenvalds, arr. Addris Sejans

Only Hope SAB - arr. Ed Lojeski

One Voice TTBB - arr. Fraser Brown

One Call Away SATB - arr. Mac Huff

One Call Away SAB - arr. Alan Billingsley

On We Go (When Breezes Blow) SSAA - Sarah Quartel

Older Women TTBB - arr. Marie Johnson

Old West Medley TTB - arr. Mark Hayes

Old Man Noah Knew a Thing or Two TTBB - arr. Robert Wadsworth and Fred Bock

Old Joe Clark TTBB - arr. Dwight Bigler

Old Friends TTBB - arr. Evalyn Cogswell

Oh, Shenandoah SATB - arr. Alf Houkom

Oh, Happy Day (A Medley) SATB - arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Tenor 2 Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Tenor 1c Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Tenor 1b Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Tenor 1a Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Soprano 2 Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Soprano 1 Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Bass 2 Predominant arr. Pete Schmutte

Oh, Happy Day (A Medley) SATB - Bass 1 Predominant arr. Pete Schmutte

Oh, Freedom! SATB - arr. John Purifoy

Oh, Dear! What can the Matter Be SSA - arr. John Carter