Mark O'Connor
Now this guy plays fiddle! From classical crossover, to jazz, and country, he is difficult to categorize but very easy to listen to
Anita O'Day
Official site of the legendary jazz vocalist.
.Joe "King" Oliver
Biography of Joe "King" Oliver and information on his famous New Orleans and Chicago bands, which included Louie Armstrong.
Joe "King" Oliver
Louis Armstrong's mentor (who called him Papa Joe) "was famous for his using mutes, derbys, bottles, and cups to alter the sound of his cornet."
Ondar
"If Gladys Knight could do this, she wouldn't need no Pips!" Ondar Combines Asian folk singing with jazz, and performs with Bela Fleck and the Flecktones (summer 2000).
Chris Opperman
Opperman is a bright newcomer whose influences range from Mozart to Zappa. He uses some top names in fusion to enact his funky complex compositions, and sings, plays keyboards and trumpet, and does seemingly whatever else needs doing!
The Oregon Pages
A page dedicated to the talented members (or past members) of Oregon: Glen Moore, Paul McCandless, Ralph Towner, Collin Walcott, and Trilok Gurtu.
Original Dixieland Jazz Band
Famed trumpeter Mr. Dominic James "Nick" LaRocca led this historically important band from 1917 on. His son Jimmy keeps the flame burning today, and the band currently plays a busy schedule in New Orleans, and around the world.
Greg Osby
A creative sax player who pushes the envelope and makes jazz that is both fresh and controversial. Site includes bio and several interviews.
Tony Oxley
A British avant-garde drummer who has worked with Derek Bailey, Anthony Braxton. and his own Celebration Orchestra.
Makoto Ozone
A Japanese pianist (son of pianist Minoru Ozone) who studied at Berklee and went on to play and record extensively with Gary Burton.