One, two, three, four, song / Deborah Crowley, Kitty Shields & Marie Smith, singing in Eng...

One, two, three, my granny had a flea, rhyme / Linda Carson, speech in English

One, two, three, O'Leary, song [Belfast] / Norah Shields, singing in English

One, two, three, O’Leary, rhyme [Monaghan] / Daphne Hillis, speech in English

Only a face in the firelight /  Petchie Nash & Frankie Nash

Only our rivers run free, song / Charlie Costelloe, singing in English

Óró ‘sé do bheatha ‘bhaile, song / Denis Cox, singing in Irish

Óró sé do bheatha 'bhaile / The Xi'An Sí (China)

Ostinelli's hornpipe [comp. Louis Ostinelli] / Larry Redican, fiddle ; James Lad O'Beirne,...

Ouch it’s Francie ; The yellow tinker / Buille

Our Queen can burl her leg, song / John Shields, singing in English

Our Queen up the river, song / John Shields, singing in English

Our Queen won the medal, song / Eileen Keaney, singing in English

Our Queen won, song / Eileen Keaney, singing in English

Outline musical biography, speech / Joe Ryan, speech

Over the moor to Maggie, reel ; and other reels / Halpin Trio, instrumental group

Over the mountain [The trip over the mountain], song / Sinéad Caher, singing in English

Over the mountain, song / Packie Manus Byrne, singing in English

Oxford City, song / Mary Anne Canny, singing in English

Oyster River ; Teetotallers ; Fates Reel / Albert Healy