O Be Joyful Cynthia Dobrinski, John Leavitt Tenor, Bass, Viola, Soprano, Handbell alternative, Gospel, Stage & Screen
Oblivion Island Lena Orsa Piano, Bass guitar, Drum Set, Guitar, Bass New Age, Stage & Screen, Folk World & Country
Nursie Nursie Art Noel, Don Pelosi, Worton David, Bert Lee, Clarice Mayne, Elsie Carlisle Piano, Guitar, Electric guitar Stage & Screen, Military, Pop, Traditional Pop
Nuvole Bianche Ludovico Einaudi Cello, Piano, Violin, Harp, Double Bass, Viola Classical, Soundtrack, Easy Listening, New Age, Pop
O Beata Trinitas Aristotle A. Esguerra, Giovanni Pierluigi da Palestrina, Grahame Davies, Jacob Handl, Paul Mealor Piano, Guitar Classical, Gospel, Folk World & Country, Renaissance, Stage & Screen
Obituary Alexandre Desplat, Alexandre Michel Gerard Desplat, Annastasiya Pieskova, Bojana Jovanovic Viola, Cello, Violin, Piano Baroque, Classical, Stage & Screen
Oath Sign Cody Ukulele, Materia Editions, Sho Watanabe Ukulele Folk World & Country, Rock, Stage & Screen, J-Pop, Pop
Ob La Di Ob La Da Jim Beloff, Carolyn Miller, Maeve Gilchrist, John Lennon, Lil' Rev, Phillip Keveren Bass guitar, Bass, Piano, Guitar, Ukulele, Flute ska, Reggae, Pop Rock, Rock, Adult Contemporary
O America! Brendan Graham, Roger Emerson, Jim Kazik, William Joseph, Celtic Woman Piano, Guitar, Cello Adult Contemporary, Celtic, Soundtrack, Pop, Stage & Screen
O Canada Justice R.S. Weir, Anne Raugh, Calixa Lavallée, Adolphe-Basile Routhier, JT Detwiler, Deke Sharon Violin, Clarinet, Flute, Soprano Saxophone, Horn, Piano Stage & Screen, Folk World & Country, Blues, Children, Jazz
