O'Regan
Artist with "Tunnel Vision" album

O'Regan, Mary
Artist with "Every punch needs a kiss" album

O'Reilly and Associates
Artist with "Programming Python" album

O'Reilly's Irish Newfoundland Pub
Artist with "Welcome To The Experience" album

O'Reily, Van Delinder & Swenson
Artist with "The Way the Heart is Sculpted" album

O'Riley
Artist with "Scriabin - Vers la Flamme" album

O'Riley, Christopher
Artist with the following albums: "Second Grace: The Music of Nick Drake", "Hold Me to This", "Home to Oblivion - A Tribute to Elliott Smith"

O'Rourke Prime Prevost
Artist with "Alpha Lemur Echo Two" album

O'Ryan
Artist with the following albums: "O'Ryan", "Something Strong", "Initiate"

O'Ryan Island
Artist with "moonshine" album