Bulat Okudshawa’88 – Lieder II – Plane – Germany – 7500 (inner, Булат Окуджава )

Finn Olafsson’s Savannah’77 – Same – KMF – Denmark – 7500 (ex-Ache guitarist, progressive)

The Old Man And The Sea’90 – Unreleased Second Album – private – Denmark – 9500 (prog)

Old Timers/Marianna Wroblewska’75 – Meeting – Muza – Poland – 1500 (Polish Jazz Vol. 44)

Old Timers’78 – With Wild Bill Davison – Muza – Poland – 1500 (Polish Jazz Vol. 57)

4241. Mike Oldfield’82 – Five Miles Out – Virgin – Germany – 1800 (gfc)

Mike Oldfield’91 – Heaven’s Open – Virgin – Germany – 2800 (inner)

Mike Oldfield’92 – Tubular Bells II – Warner – Germany – 3500

Mike Oldfield’93 – Elements-The Best Of – Virgin – UK – 5500 (16 best tracks)

Sally Oldfield’90 – Natasha – CBS – Holland – 2000 (inner)

4246. Olsson & Fitinghoff’74 – Same – CBS – Sweden – 5500 (inner, folk/rock)

Olympic’78 – Overhead – Supraphon – Czechoslovakia – 1500 (rock)

Omega’73 – Same – Bacillus – Germany – 4500 (gfc, English-language album, Dieter Dierks, prog)

Omega’79 – Gammapolis – Pepita – Hungary – 3500 (gfc, prog)

Omega’81 – Working – WEA – Germany – 1800 (prog)

Omega’82 – Х I – Pepita – Hungary – 1800 (insert, prog)

Omen'85 – Warning Of Danger – Roadrunner – Holland – 2500 (inner, heavy metal)

One’69 – Same – Fontana – France – 35.500 (gfc, prog)

One For All’05 – Killer Joe – Venus – Japan – 8500 (obi, insert, audiophile jazz sextet)

4255. One More Chance’73 – Various Artists – Charisma – UK – 3500 (inner, compilation of singles by Genesis, VDGG, Audience, The Nice, Rare Bird, etc)

Yoko Ono’71 – Fly – Apple – USA – 10.500 (2LP, gfc, 2 inners, poster, card, featuring John Lennon, Ringo)

4257. Yoko Ono’73 – Approximately Infinite Universe – Apple – UK – 7500 (2LP, 2 inners, gfc)

Opale’81 – La Derniere Toile Du Maitre – Podom – France – 9500 (gfc, prog)

O.P.M.C.’70 – Amalgamation – Pink Elephant – Holland – 9500 psych/prog)

Opus’84 – Live Is Life – Polydor – Germany – 2500 (inner, pop/disco)

Opus Avantra’75 – Lord Cromwell – Suono – Italy – 6500 (gfc, prog)

4262. Opus III & Friends’70 – Same – Sonet – Sweden – 18.500 (prog)

Orange Bicycle’70 – Same – Parlophone – UK – 65.500 (flipback cover, label inner, prog)

4264. ORB’95 – Orbus Terrarum – Island – UK – 7500 (gimmick plastic cover, 2 map inners, electronic)

Roy Orbison’64 – More Of Roy Orbison’s Greatest Hits – Monument – USA – 2800 (60’s)

Roy Orbison’66 – The Classic Roy Orbison – London – UK – 4500 (60’s)

Roy Orbison’72 – Memphis – London – UK – 3500 (60’s)

Roy Orbison’72 – Sings – London – UK – 3500 (60’s)

Roy Orbison’89 – A Black And White Night Live – Virgin – Italy – 3500 (inner, 60’s)

Roy Orbison’92 – King Of Hearts – Virgin – UK – 4500 (inner, 60’s)

Roy Orbison’11 – The Monument/Singles Collection – Sony – EU – 5500 (2LP, sticker, still sealed, 60’s)

Original Mouth And Friends’73 – Same – Intercord – Germany – 6500 (psych/prog)

4273. Le Orme’69 – Ad Gloriam – Akarma – Italy – 7500 (1999 reissue, gfc, + single in picture sleeve)

Le Orme’71 – Collage – Philips – Italy – 15.500 (gfc, prog)

4275. Le Orme’73 – Felona & Sorona – Charisma – UK – 35.500 (gfc, misprint, UK version with Peter Hammill lyrics)

Le Orme’74 – In Concerto – Philips – Italy – 6500 (gfc, Italian prog)

Orme’79 – Florian – Philips – Italy – 9500 (gfc, inner, prog)

Orme’90 – Same – Philips – Italy – 5500 (inner)

Orphan’72 – Everyone Lives To Sing – London – UK – 5500 (label inner, folk/rock)

Orphee’78 – Venant Du Meme Rocher – private – Canada – 5500 (inner, folk/prog)

Osanna’71 – L’Uomo – Fonit – Italy – 75.500 (triple gfc, prog)

Osanna’72 – Preludio Tema Variazioni Canzona – Fonit – Italy – 35.500 (gfc, prog)

Osanna’74 – Landscape Of Life – Fonit – Italy – 35.500 (gfc, prog)

Oscar’76 – Twilight Asylum – DJM – UK – 2500 (gfc, glam rock/prog)

Osibisa’71 – Same – MCA – UK – 5500 (gfc, Decca inner, afro/funk/prog)

Osibisa’72 – Heads – MCA – UK – 3500 (gfc, Decca inner, afro/funk/prog)

Osibisa’73 – Super Fly TNT – Buddah – USA – 3500 (gfc, afrobeat/funk)

Osibisa’75 – Welcome Home – Bronze – UK – 5500 (gfc, Decca inner, afro/funk/prog)

4289. Osiris’84 – Myths & Legends – private – Philippines – 15.500 (in shrink, Bahrain band)

Ottawan’80 – D.I.S.C.O. – Carrere – Germany – 2900 (disco)

Ottawan’81 – 2 – Carrere – France – 2500 (disco)

Ottawan’81 – Greatest Hits – Carrere – EEC – 3500 (disco)

Ouliana’72 – Same – private – France – 3500 (Уляна, ukranian folk songs)

Our Generation’89 – Same – Tellydisc – UK – 3500 (4LP box-set of best tracks from 60’s including Cream, Kinks, Move, Animals, Procol Harum, Status Quo, Simon Dupre, Amen Corner, Joe Cocker)

Out Of Focus’72 – Four Letter Monday Afternoon – Kuckuck – Germany – 55.500 (2LP, gfc, prog)

4296. Over The Rainbow’75 – The Last Concert Live! – Chrysalis – UK – 2500 (live concert featuring Procol Harum, Kevin Coyne, Hatfield And The North, Frankie Miller, Sassafras, Richard/Linda Thompson)

4297. Overkill’87 – Fuck You!!! – Megaforce – Atlantic – 2990 (in shrink, thrash metal)

Overkill’87 – Taking Over – Megaforce – Canada – 3500 (inner, thrash metal)

Overkill’88 – Under The Influence – Atlantic – Germany – 3500 (inner, thrash metal)

Ozric Tentacles’92 – Live Underslunky – Dovetail – UK – 5500 (2LP, prog)

Ozzy Osbourne’80 – Blizzard Of Ozz – Epic – Holland – 4500 (inner)

Ozzy Osbourne’80 – Mr. Crowley/You Sad It All/Suicide Solution – Jet – UK – 2500 (3-track maxi-single, specially recorded live versions of tracks)

Ozzy Osbourne’81 – Diary Of A Madman – Epic – Holland – 2990 (inner)

Ozzy Osbourne’83 – Bark At The Moon – Epic – UK – 4500 (2 inserts)

Ozzy Osbourne’83 – Bark At The Moon – Epic – Holland – 3500 (inner)

Ozzy Osbourne’84 – Bark At The Moon Tour – UK – 2500 (tour book)