Előadók - "O"
- Oasis (Artist)
- Obie Trice (Artist)
- Ocean Colour Scene (Artist)
- Odadaa (Artist)
- ODB (Artist)
- Odette Lara (Artist)
- Odon Alonso (Conductor)
- Ogli G (Artist)
- Okko Kamu (Conductor)
- Ol Skool (Artist)
- Olaf Bär (Baritone)
- Oleander (Artist)
- Olesya Novikova (Artist)
- Oleta Adams (Artist)
- Olga Borodina (Mezzo-Soprano)
- Olga Zabotkina (Soprano)
- Oliver Knussen (Sound Editor)
- Oliver Nelson (Artist)
- Oliver Widmer (Bass-Baritone)
- Olivera Miljakovic (Soprano)
- Olivier Latry (Organ)
- Oliviero de Fabritiis (Conductor)
- Ollabelle (Producer)
- Ollano (Artist)
- Omara Portuondo (Singer)
- Omega (Artist)
- One Night Only (Artist)
- OneRepublic (Artist)
- Onyx (Artist)
- Opera Chorus Of Paris (Chorus)
- Opera Orchestra Zurich (Orchestra)
- Oralia Dominguez (Mezzo-Soprano)
- Orchester Der Bayreuther Festspiele (Orchestra)
- Orchester der Bayreuther Festspiele (Orchestra)
- Orchester der Deutschen Oper Berlin (Orchestra)
- Orchester der Oper Zürich (Orchestra)
- Orchester der Vereinigten Bühnen Wien (Orchestra)
- Orchester der Wiener Staatsoper (Orchestra)
- Orchestra (Orchestra)
- Orchestra (Artist)
- Orchestra Del Gran Teatro La Fenice (Orchestra)
- Orchestra del Maggio Musicale Fiorentino (Orchestra)
- Orchestra del Teatro alla Scala di Milano (Orchestra)
- Orchestra del Teatro Carlo Felice (Orchestra)
- Orchestra del Teatro Comunale di Bologna (Orchestra)
- Orchestra del Teatro dell'Opera di Roma (Orchestra)
- Orchestra del Teatro La Fenice Venezia (Orchestra)
- Orchestra del Teatro Regio di Torino (Orchestra)
- Orchestra dell'Accademia Nazionale di Santa Cecilia (Orchestra)
- Orchestra dell´ Arena di Verona (Orchestra)
- Orchestra e Coro del Maggio Musicale Fiorentino (Orchestra)
- Orchestra e coro del Teatro alla Scala, Milano (Orchestra)
- Orchestra Ensemble (Ensemble)
- Orchestra Filarmonica Della Scala (Orchestra)
- Orchestra La Scintilla (Orchestra)
- Orchestra Mozart (Orchestra)
- Orchestra of Moscow Classical Ballet (Orchestra)
- Orchestra Of St Luke's (Orchestra)
- Orchestra Of The 18th Century (Orchestra)
- Orchestra Of The Academy Of Ancient Musi (Orchestra)
- Orchestra Of The Age Of Enlightenment (Orchestra)
- Orchestra of the Bavarian Radio (Orchestra)
- Orchestra of the Bavarian State Opera (Orchestra)
- Orchestra of the Eighteenth Century (Orchestra)
- Orchestra of the Gran Teatre del Liceu (Orchestra)
- Orchestra of the Kirov Opera, St. Petersburg (Orchestra)
- Orchestra of the Mariinsky Theatre (Orchestra)
- Orchestra of the Opernhaus Zürich (Orchestra)
- Orchestra of the Royal Opera House, Covent Garden (Orchestra)
- Orchestra of the Shevchenko Opera & Ballet Theatre, Kiev (Orchestra)
- Orchestra of the Teatro Massimo Bellini, Catania (Orchestra)
- Orchestra of the Welsh National Opera (Orchestra)
- Orchestra of Westminster Abbey (Orchestra)
- Orchestra Philharmonic De Radio France (Orchestra)
- Orchestra Sinfonica della Provincia di Bari (Orchestra)
- Orchestra Sinfonica di Milano Giuseppe Verdi (Orchestra)
- Orchestra Sinfonica e Coro di Milano Giuseppe Verdi (Orchestra)
- Orchestra Sinfonica Italiana (Orchestra)
- Orchestra Sinfonica Nazionale della Rai (Orchestra)
- Orchestre de Chambre de Lausanne (Orchestra)
- Orchestre de l'Opéra Bastille (Orchestra)
- Orchestre de l'Opéra de Lyon (Orchestra)
- Orchestre de l'Opéra de Paris (Orchestra)
- Orchestre de l'Opera National de Lyon (Orchestra)
- Orchestre de l'Opéra-Comique, Paris (Orchestra)
- Orchestre De La Bastille (Orchestra)
- Orchestre de Paris (Orchestra)
- Orchestre des Concerts Lamoureux (Orchestra)
- Orchestre du Capitole de Toulouse (Orchestra)
- Orchestre du Théatre National de Prague (Orchestra)
- Orchestre National Bordeaux Aquitaine (Orchestra)
- Orchestre National D'Ile De France (Orchestra)
- Orchestre National De France (Orchestra)
- Orchestre National De Jazz (Artist)
- Orchestre National de l'Opéra de Monte-Carlo (Orchestra)
- Orchestre National de l'ORTF (Orchestra)
- Orchestre Philharmonique de Radio France (Orchestra)
- Orchestre Révolutionnaire et Romantique (Orchestra)
- Orchestre Symphonique de Montréal (Orchestra)
- Oregon (Artist)
- ORF Symphony Orchestra (Orchestra)
- Orginal Norwegian Cast "Sophie's World" (Artist)
- Orianthi (Electric Guitar)
- Original (German) Cast of "Tanz Der Vampire" (Artist)
- Original Broadway Cast (Artist)
- Original Broadway Cast "Rent" (Artist)
- Original Cast (Artist)
- Original Cast Of Cats (Artist)
- ORIGINAL CAST RECORDING (Artist)
- Original Cast: Starlight Express (Artist)
- Original Hungarian Cast Of Elisabeth (Artist)
- Original London Cast (Artist)
- Original London Cast (Artist)
- Original London Cast (Artist)
- Orlando Consort (Choir)
- Orli Shaham (Piano)
- Orpheus Chamber Orchestra (Orchestra)
- Orquesta De Cadaques (Artist)
- Orquesta de la Comunidad de Madrid (Orchestra)
- Orquesta Del Teatro Real De Madrid (Orchestra)
- Orquesta Sinfónica de Madrid (Orchestra)
- Orquesta Sinfónica de Galicia (Orchestra)
- Orquesta Sinfonica R.T.V. Espanola (Orchestra)
- Orquesta Titular del Teatro Real (Orchestra)
- Orquestra de la Comunitat Valenciana (Orchestra)
- Orquestra Was (Artist)
- Orson (Producer)
- Ortrun Wenkel (Contralto)
- Os Cariocas (Artist)
- Os Mutantes (Artist)
- Oscar D'Leon (Artist)
- Oscar Giunta (Double Bass)
- Oscar Peterson (Artist)
- Osian Ellis (Harp)
- Osipov State Russian Folk Orchestra (Orchestra)
- OST (Artist)
- Österreichisches Ensemble für Neue Musik (Ensemble)
- Osvaldo Golijov (Artist)
- Otis Redding (Artist)
- Otis Rush (Artist)
- Otis Spann (Piano)
- Ottavio Dantone (Harpsichord)
- Otto Edelmann (Bass)
- Otto Gerdes (Executive Producer)
- Ours (Artist)
- Ove Gotting (Chorus Master)
- Owain Arwel Hughes (Conductor)
- Owen Brannigan (Bass)