O BRIEN, RICHARD O'BRIEN, T O'CALLANAIN O'Carolan, Turlough O'Farrill, Chico O'GORMAN PETER O'Neill, Francis O'Neill, Jackie O'Regan, Tarik O'Reilly, J & Kinyon, J O'Reilly, John Oakland / Drake arr. Shaw Oakland, Ben Oakland, Ben - Drake, Milton Oare, Michael OASIS Oberholzer, V Obijalska, Dorota, and Wawruk, Marcin Obradors, Fernando Obrecht, Jacob Obrovska, Jana Ochs, R Ockeghem, Johannes Offenbach, Jacques Ogiński, Michał Kleofas Okoshi, Tiger & Lewis, Charles OLA GJEILO Olah, Tiberiu OLATUNJI, BABATUNDE Oldenkamp, Michiel Olivadoti, J. Oliver, Sy Olson, Lynn Freeman Omartian, Michael Ondrícek, František Ongarello, Antonio Ónozó János Onslow Orbán György Orban, Marcel Orbison, Roy Orbison, Roy and Dees, Bill Orefici, Alberto Orff, Carl Orkisz, Andrzej Oromszegi Ottó Orr, Buxton Országh Tivadar Ortelli, Antonio & Pigarelli, Luigi Ortiz, Diego Osborne, Anthony Osborne, Tony (arranger) Osbourne, Ozzy Osbourne, Ozzy & Rhoads, Randy & Daisley, Bob Osbourne, Ozzy - Rhoads, Randy Osorio, Nuno Osterling, Eric Oswald, Gerald Ott Rezső Otto M. Schwarz Owsinsky, Bobby Ozi, Etienne O'Loughlin, Sean (instrumentation by) O'Neill, Jackie (arranged by) Oberbek, Jan (edited by) Ocker, Marshall (instrumentation by) Oddo, J. (instrumentation by) Odry Lehel (words by) Oeser, Fritz / Felsenstein, Walter (edited by) Oesterle, Louis (edited by) Ofburg (instrumentation by) Ogonovsky, Margaret (arranged by) Ohanian, David (arranged by) Oistrach, D. (edited by) Oldenkamp, Michiel (edited by) Oleskiewicz, Mary (edited by) Olson, Lynn Freeman (edited by) Olson, Lynn Freeman (arranged by) Ongarello, Antonio (arranged by) Ónozó János (edited by) Orbán György (composer-contributor) Orbán György (transcribed by) Orbán György (edited by) Orbán György (arranged by) Orbán György (piano score by) Orbán György (edited by) Orbán Ottó (translated by) Orenstein, Arbie (edited by) Orford, John (editor) (edited by) Ormay Ferenc (words by) Ormay Imre (translated by) Ormay Imre (words by) Oromszegi Ottó (edited by) Orphee, Matanya (edited by) Országh Tivadar (transcribed by) Országh Tivadar (compiled by) Országh Tivadar (transcribed for violin and piano) Ortega, J. (edited by) Ortega, J. (transcribed and edited by) Ortiz, Juan (instrumentation by) Osborne, Tony (arranger) (edited by) Osterling, Eric (instrumentation by) Osvát Erzsébet (words by) Ötsch, Barbara - Schneider, Martina (edited by) Ott Rezső (piano score by) Oud, Thijs (instrumentation by) Owen, Don (instrumentation by)