Operation Dinner Out Silvestro Sabatelli Cello, Hoorn, Fluit, Fagot, Altviool, Hoboï Podium & Scherm, Opera
Orfeo ed Euridice Ouverture Edition Maulwurf, Christoph Willibald Gluck, Christoph Willibald von Gluck Trompet, Hoorn, Tuba, Trombone Klassieke periode, Opera, Klassiek
Operation Ouch Dobs Vye, Jose Ignacio Huante Ceron, Jess Charles Piano Rock, Pop, Kinderen, Opera, Podium & Scherm
Orsù più non si tardi... Udite, tutti udite Domenico Cimarosa, Ed. David Burkhard Piano Klassieke periode, Klassiek, Romantisch, Opera
La bohème: Act I - "O soave fanciulla" Matt Amy, Giacomo Puccini, Giuseppe Giacosa, Renato Tagliabue, Luigi Illica Tenor, Sopraan, Piano Klassiek, Romantisch, Operette, Kinderen, Opera
Orpheus In The Underworld - Overture Ben Littler, Clara Obsidian, Shinji Kasama, Jacques Offenbach Cello Klassiek, Opera, Romantisch
Or sai chi l'onore Open Cloud, Wolfgang Amadeus Mozart, Wolfgang Völkl Piano, Fluit, Cello, Hoge stem, Viool Klassieke periode, Klassiek, Romantisch, Opera
Andante from Orfeo ed Euridice. Piano 4 hands Kenneth Martin, Christoph Willibald Gluck, Ester Alessandrini, Shawn Heller, Christoph Willibald von Gluck, Parry Library Piano, Fluit, Klarinet, Hoboï, Fagot, Hoorn Barok, Folk Wereld en Land, Klassieke periode, Opera, Klassiek
Caeleb Tee - Out of the Depths Nicholas Palmer, Charles E. Callahan Jr., Martin Luther, Clifford Brock, Jesse Boyd, Dan Nichols Piano, Tenorsaxofoon, Saxofoon, Orgel, Sopraan, Baritonsaxofoon Barok, Folk, Jazz, Opera, Evangelie
Overture from The Magic Flute Jack Chao Heng Zhang, César Madeira, Wolfgang Amadeus Mozart Fagot, Hoboï, Klarinet, Hoorn, Fluit Klassiek, Vroege muziek, Folk Wereld en Land, Podium & Scherm, Klassieke periode
Orpheé aux Enfers "overture" Jacques Offenbach, Ray Thompson Piano, Fluit, Bas, Contrabas, Klarinet, Hoboï Opera, Romantisch, Klassiek
