O   (4) Oistrach, Staatskapelle Dres.. Omar Sosa Orchester Anthony Ventura   (21) Oskar Sala
O + Noto Ojoruido Omara Portuondo   (7) Orchestra 'lautarii' Oskorri   (34)
O Brother Where Art Thou? Ojos De Brujo   (4) Omarion ORCHESTRA BAOBAB   (8) Ossastorium
O Melhor De So Pra Contrariar Ok 01 Omarion ft. Usher Orchestra Harlow OST Passengers
O Rappa   (7) OK Go OMD   (12) Orchestral Manoeuvres In The Dark   (4) Ost/Grand Theft Auto Vice City
O Yuki Conjugate   (5) Oka Road Omega   (14) Orcustus Ostrogoth   (4)
O Yuki Conjugate and The Sons Of Silence Okay Temiz Ominus Ordalium Osunlade   (4)
O'Death Okkervil River   (6) Omissa Ordo Draconis Osvaldo Golijov
O'dette Okkervil River and Shearwater Omission Ordo Equilibrio   (3) Oswaldo Montenegro   (29)
O'funk'illo Okko Omni   (3) Ordo Equitum Solis   (9) Oszilla
O'Ryan Okna Tsahan Zam Omni Trio   (5) Ordo Rosarius Equilibrio OT Operacion Techno Vol. 2
O'stravaganza Oktor Omnibus Oregon   (15) Otargos
O-Zone   (4) Ol' Dirty Bastard   (3) Omnium Gatherum Oregon and Elvin Jones Otarion   (4)
O.A.R.   (6) Old   (3) On Oren Ambarchi OTEP   (5)
O.A.R. (Of a Revolution) Old 97's On A Solid Rock Orff, Carl   (3) Otis Fodder
O.B.I.   (3) Old and In the Gray On the Last Day Organic Audio Otis Redding   (11)
O.O.O.D   (3) Old and in the Way On The Might Of Princes Organic Noise Otis Redding and Carla Thomas
O.Pogudin   (3) Old Blind Dogs   (4) On Thorns I Lay   (6) Organized Konfusion   (13) Otis Rush   (9)
O.Rang   (3) Old Crow Medicine Show   (6) On Wings Of Song and Robert Gass Organized Nature Otis Spann   (14)
Oakley Hall Old Dead Tree   (3) Onar Orgone Otis Spann and Fleetwood Mac
Oasis   (17) Old Fashion Knife Fight Ondar Orgy   (5) Otis Taylor   (7)
Oath Of Cirion Old Funeral Ondekoza   (4) Orient Expressions Otomo Yoshihide   (7)
Oath Witness Old Horned Sheep Ondskapt Origa   (8) Otomo Yoshihide and Martin Tetreault
Oathean Old Man Gloom   (5) One and Tino Izzo Origen   (3) Ott
Obiat Old Man's Child   (7) One Dark Martian Origen - A. Zakharenko Ottawan   (4)
Obie Trice   (4) Old Pagan One Dollar Short Origin Ottmar Liebert   (27)
Obituary   (12) Old School Slow Jams One Hand Clapping Originais Do Samba Ottmar Liebert + Luna Negra
Obo + Jorge Old Wainds One Less Reason Orion   (3) Ottmar Liebert and Luna Negra
Obsession Oldfield Terry One Life Crew Orion and Kamal Ottmar Liebert, Paco De Lucia, Al Di Meola
Obsessions Oldominion One Man Army Orion Too Feat. Caitlin Otto Von Schirach
Obsidian Gate Ole Erling   (3) One Man Army And the Undead Quartet Orishas Ottorino Respighi
Obsidian Voice Ole Hojer Hansen   (3) One Minute Silence   (4) Ork Otyg   (4)
Obstinacy Ole Lukkoye One More Angel Orkiestra Osmego Dnia   (3) Ougenweide
Obszon Geschopf Oleg Kostrow One Night Only Orkrist   (3) Ouija
Obtest   (5) Oleg Malov, Piano One On One Orlando consort   (3) Oumou Dioubate
Ocarina   (11) Olemus One Second Bridge Orlando Contreras Oumou Sangare   (3)
Occult   (3) Olga Guillot One Self Orlando Gibbons Our Lady Peace   (7)
Ocean Colour Scene   (9) Olhon One Way Ride Orleya Our Last Night
Ocean Machine Olien Oneida Ornah-Mental Our Turn
Ocean of Sorrow Olive Oneiroid Psychosis   (3) Ornament Ours
Oceana Oliver Dragojevic   (7) Oneiros Ornette Coleman   (28) Out Hud   (3)
Oceania Oliver Ganz   (3) Onelinedrawing Ornette Coleman Double Quartet Out Of Focus
Oceanlab Oliver Hacke   (3) OneRepublic   (3) Ornette Coleman Trio Out Of Grace
oceanlab featuring justine suissa Oliver Huntemann   (3) Onesidezero   (3) Ornette Coleman with Prime Time Out Of Phase
Oceans Of Sadness Oliver Jones Onetwo   (4) Oro Solido Out Of Reach
Oceansize   (3) Oliver Knussen Oneyed Jack   (3) Orodruin Out To Win
Oceantime Oliver Koletzki   (3) Onkel Tom Angelripper Orphanage Outback
Ocelot   (3) Oliver Lake Only Crime Orphaned Land   (6) Outblast
Ocelot and Vector Selector Oliver Lake and Julius Hemphill Onsetcold Orplid   (4) Outcast   (3)
Ochre Oliver Messiaen Onslaught   (4) Orquesta Arcano Outfit
Octave One Oliver Moldan and Isma-Ae Onyx   (8) Orquesta Casino de la Playa Outkast   (12)
Octex Oliver Mtukudzi Oomph!   (23) Orquesta De La Luz Outlawz
October Falls Oliver Nelson   (5) Oophoi   (12) Orquesta Guayacan   (4) Outlines
October File Oliver Nelson's Big Band Oophoi and Klaus Wiese Orquesta La Solucion Outrage
October Project Oliver Nelson; Bill Evans; Roy Haynes; Eric Dolphy; Paul Chambers; Freddy Hubbard Oophoi and Klaus Wiese and Tau Ceti Orquesta Tabaco Y Ron Outrageous Cherry
October Tide   (3) Oliver Serano-Alve Oophoi and Mathias Grassow and Amir Baghiri Orson Outta Nowhere
Octogen Oliver Shanti   (35) Oophoi and Tau Ceti Orson Scott Card Outworld
Ocultan Oliver Shanti & Emao Oophoi, Klaus Wiese, Tau Ceti Orthodox Ouzo
Odal Oliver Shanti and Friends   (29) Ooze Orthodox chant Oval   (7)
ODB and Black Keith Oliver Shanti and Wang Shan Ti and Hsun Wang Opera Ix   (5) Oruc Guvenc and Tumata Over It
Odd Nosdam Oliver Wakeman   (3) Operation Ivy   (9) Os Afro Over Kill   (18)
Odd Project Oliver Wakeman and Clive Nolan Operator Os Cempes Over The Rhine   (10)
Odes Of Ecstasy Oliver Wakeman and Steve Howe Operator Please Os Paralamas do Sucesso   (19) Overdrive   (3)
Odhinn Olivia Opeth   (13) Os Serranos Overhuman Project
Odile Delangle Olivia Byington   (4) Ophelia's Dream   (3) Osamu Kitajima   (5) OverKill   (21)
Odity and Cooh Olivia Newton-John   (9) Ophir Oscar Overlap
Odium Olivia Ruiz   (5) Ophthalamia   (6) Oscar D'Leon   (3) Overlap Project
Odroerir Olivia Tremor Control   (4) Opium Oscar Da Grouch Overseer
Odyssey Olivier Ker Ourio Oppenheimer Oscar De leon Overstreet
Odyssey Bogussevich and Friends Olivier Messiaen   (6) Oppressed Oscar Lopez   (4) Ovnimoon
Oedo Sukeroku Taiko Olli Mustonen, piano Oppressor Oscar Mulero Ovuca   (3)
Of Hearts and Shadows Olmarin Unioni Opsis Oscar Peterson   (30) Owen Spencer
Of Montreal   (11) Olof Hammar Optical Image   (8) Oscar Peterson / Oscar Peterson Trio Oxbow
Of The Wand and The Moon   (3) Oloolo and Derek Holzer Optimum Wound Profile Oscar Peterson and Harry Edison and Eddie Oxia   (5)
Off The Sky   (6) Olvis Optiv Oscar Peterson and Stephane Grappelli Oxia - Intus
Offenbach Olympos Mons Optokoppler Oscar Peterson and Stephane Grappelli Quartet Oxia Vs Ginos and Snake
Offer Nissim   (9) Om Opus Oscar Peterson Trio   (7) Oxygiene 23
Offertorium Omar Opus III Oscar Peterson Trio and Stan Getz Oxymoron
Officium Triste   (11) Omar a Lopez Rodriguez Ora Oscar Peterson Trio with Herb Ellis Oystein Sevag   (9)
Offroad Omar A. Rodriguez-Lopez Oracle Oscar Peterson Trio with Lester Oystein Sevag + Lakki Patey
Oforia   (3) Omar and The Howlers Orange 9mm   (4) Oscar Peterson with Harry Edison and Eddie Cleanhead Vinson Oz Noy
Ofra Haza   (18) Omar Faruk Tekbilek and Brian Keane Orange Blossom Oscar Peterson With Joe Pass and Niels-Henning Orsted Pedersen Ozark Mountain Daredevils   (4)
Ogre - Skinny Puppy Omar Faruk Tekbilek and Richard A. Hagopian Orange Goblin   (6) Oscar Peterson/Joe Pass Ozgur Can and Stian Klo
Ohgr Omar Faruk Tekbilek and Yair Dalal Orange Juice   (3) Oscar Pettiford   (6) Ozma
Ohm Guru Omar Faruk Tekbilek, Yair Dalal and Azam Ali Orange Pekoe Osculum Infame   (5) Ozomatli   (5)
Ohm Square   (4) Omar Metioui and Eduardo Paniagua Orange Range   (18) Osdorp Posse   (6) Ozric Tentacles   (19)
Ohmega Watts Omar Pedrini Orange Sector   (7) Osdorp Posse and Nembrionic Ozymandias
Oi Polloi   (6) Omar Rodriguez   (3) Orbis Mundi Osho   (18) Ozymandias and Elijah's Mantle
Oi Va Voi Omar Rodriguez Lopez   (3) Orbital   (36) OSI   (6) Ozzy Osbourne   (33)
Oidoxie Omar Rodriguez Lopez And Mars Volta Orbital and Michael Kamen Osibisa   (12) O`callaghan and Kearney
Oil Omar Rodriguez-Lopez and Damo Suzuki Orbital and Therapy Osimira
Oil 10 Omar Salgado Orbital Decay   (3) OSIP
Oingo Boingo   (6) Omar Santana   (4)