Mellotron Albums: O

Bobby O (US) see: Samples etc.

Ô Paon (Québec) see: Samples etc.

OHO (US, progressive)

Okinawa (1974) - Mark O'Connor REVIEW (***½/TT (TT½))
Vitamin OHO (1991, recorded 1975) - Mark O'Connor REVIEW (****/TT½)
Ecce OHO (1998, recorded 1974/75) - Mark O'Connor REVIEW (***½/TT)
Recollections (1974-1976) (2002) - Mark O'Connor REVIEW (****/TTT½)
Crucifixion Lust: The Basement Tapes (Recorded 1974-75) - Mark O'Connor [unreleased] REVIEW (****/TTTT)
Dream of the Ridiculous Band (2008?, recorded 1976) - Mark O'Connor REVIEW (****/TT½)

OK Go (US) see: Samples etc.

ONO (US) see: Samples etc.

The OO-Ray (US) see: Samples etc.

Oak (US, pomp)
	Oak (1979) - Chamberlin - David Stone REVIEW (/½)*

Oak (Netherlands) also see: Samples etc.
	Sleep Dream Walk Enter (2007) - Olivier Schutte

Oakley (Germany) see: Samples etc.

Oasis (UK, Britpop)

(What's the Story) Morning Glory (1995) - Noel Gallagher/Paul Arthurs REVIEW (**½/T½)
Be Here Now (1997) - Noel Gallagher REVIEW (**/½)
Go Let it Out (2000 EP) - Noel Gallagher REVIEW (**½/TTT)
Standing on the Shoulder of Giants (2000) - Noel Gallagher REVIEW (**/TT½)
The Hindu Times (2002 EP) - Paul Stacey REVIEW (**½/T½)
Heathen Chemistry (2002) - Paul Stacey REVIEW (**½/TT)
Stop Crying Your Heart Out (2002 EP) - Paul Stacey REVIEW (**½/T)
Lyla (2005 EP) - Paul Stacey REVIEW (**½/TT)
Don't Believe the Truth (2005) - Paul Stacey REVIEW (***/T½)
Dig Out Your Soul (2008) - Noel Gallagher?/Jay Darlington REVIEW (***/TT (TTT½))
I'm Outta Time (2008 EP) - Noel Gallagher?/Jay Darlington REVIEW (**½/TT)
Falling Down (2009 EP) - Noel Gallagher?/Jay Darlington REVIEW (**½/TT)

Jackie Oates (UK) see: Samples etc.

Pascal Obispo (France) see: Samples etc.

Oblivion (Norway)
	Wide Awake in Dreamland (1998) - Jørn Andersen

Obrero (Sweden) see: Samples etc.

Senator O'Brien (US) see: Samples etc.

Obscured By Clouds (US) see: Samples etc.

Ocean (Germany, progressive)
	Melody (1981) - Peter J. Kunz or Stefan Peters? REVIEW (½/TT½)

Ocean Colour Scene (UK) also see: Samples etc.
	The Circle (1996 EP) - Brendan Lynch? REVIEW (/T)* One From the Modern (1999) - Brendan Lynch/Steve Cradock? REVIEW (½/T)**

Oceana Company (Netherlands)
	For the Boatman (2008) - Matthijs Herder REVIEW (½/TTT½)*

James O'Connell (US, Christian folk/psych)
	Power to Love (1975) - ? *REVIEW (/TT½)**

Octopus (Germany, progressive)
	The Boat of Thoughts (1977) - Werner Littau REVIEW (½/T) The Lost Tapes (2023, recorded 1974) - Hans-Paul Sattler REVIEW (*/TT)

Odd Man Out (US) see: Pat Torpey

Odissea (Italy, progressive) see: Samples etc.

Erin O'Donnell (US, CCM) see: Samples etc.

Rosie O'Donnell (US)
	Another Rosie Christmas (2000) - Chamberlin - Patrick Warren REVIEW (/T)**

Aoife O'Donovan (US) see: Samples etc.

Odyssey (US) see: Samples etc.

The Odysseys (Canada) see: Samples etc.

Odyssice (Netherlands, neo-progressive) see: Samples etc.

of Montreal (US) also see: Samples etc.
	False Priest (2010) - Chamberlin - Jon Brion REVIEW (½/TT½)**

Off Course (Japan)
	Wine no Nioi (1975) - Kazumasa Oda REVIEW (/½) Aitsu no Nokoshita Mono wa (1976 b-side) - Kazamasa Oda REVIEW (/T½)

Officina Meccanica (Italy)
	La Follia del Mimo di Fuoco (2007, recorded 1973-77) - Gaio Chiocchio REVIEW (/½)*

Ogre (US) see: Samples etc.

Kei Ogura (Japan)
	Nokosa Reta Dōkei (1974) - Jun Fukamachi REVIEW (/T)*

Ohama (Canada) see: Samples etc.

Ohio Players (US, funk)
	Skin Tight (1974) - Billy Beck REVIEW (/T½)*

Christine Ohlman & Rebel Montez (US) see: Samples etc.

Ohm (US, electronic)
	O2 (1997) - Doug Ferguson REVIEW (/TTT)* Voices (1999) - Doug Ferguson REVIEW (/TTT)* Raw Ohm (2001, recorded 1997-98) - Doug Ferguson REVIEW (/TTT½)*

Goro Ohmi & Big Mouth (Japan)
	Guin Saga: War Battle (1985) - Goro Ohmi REVIEW (½/T)*

Oiseaux-Tempête (France) see: Samples etc.

Yuki Okazaki (Japan)
	My Concert Live (1975) - Jun Fukamachi

Danny O'Keefe (US)
	So Long Harry Truman (1975) - John Boylan REVIEW (½/T½)**

Okkervil River (US) also see: Samples etc.
	Don't Fall in Love With Everyone You See (2002) - Will Robinson Sheff REVIEW (½/T)* Down the River of Golden Dreams (2003) - Jonathan Meiburg REVIEW (½/T½)* Black Sheep Boy Appendix (2005 EP) - Alice Spencer REVIEW (½/TT)* The Stand ins (2008) - Scott Brackett/Justin Sherburn/Brian Beattie REVIEW (/½)*

Norio Oku (Japan)
	Norio e Canzone (1975) - Goro Ohmi

Tamio Okuda (Japan)
	29 (1995) - Bernie Worrell REVIEW (/T)* E (2002) - ? REVIEW (/T)*

Ryo Okumoto (Japan, progressive) see: Samples etc.

Old Hickory (US)
	Other Eras... Such as Witchcraft (1997) - Chamberlin - Michael Marqueson REVIEW (/T)*

Old Town School of Folk Music (US) see: Samples etc.

Old 97's (US) see: Samples etc.

Olesen-Olesen (Denmark) see: Samples etc.

Olive (Japan, progressive)
	First Album (1976) - Ken Miyazawa REVIEW (/½)*

Jen Olive (US) see: Samples etc.

Michael Oliver & Go, Dog, Go! (US)
	Pop & Circumstances (1999) - Michael Oliver REVIEW (/T½)*

Rick Olivier (UK) see: Samples etc.

Michael Olivieri (US) see: Samples etc.

Chris Olley (UK) see: Samples etc.

Allan Olsen (Denmark) see: Samples etc.

Mark Olson (US) see: Samples etc.

Ome (UK) see: Samples etc.

Omega (Hungary, progressive/hard rock)

Omega (1973) - László Benkő REVIEW (***½/T½)
Pearls in Her Hair (1973 single) - László Benkő REVIEW (***½/TT)
200 Years After the Last War (1974) - Támas Mihály REVIEW (***½/TT)
Omega III (1974) - Támas Mihály REVIEW (***/T½)
Omega 8: Csillagok Útján/Skyrover (1978) - László Benkő/Támas Mihály REVIEW (***/T)
Gammapolis/Omega 9 (1979) - László Benkő REVIEW (***½/T)

Omega Syndicate (UK, electronic) see: Samples etc.

Ominous Seapods (US) see: Samples etc.

Josh One (US) see: Samples etc.

One-Eyed Doll (US)
	The Loveland (2014 single) - Jason Rufuss "Junior" Sewell REVIEW (/T½)*

One-Eyed Mule (Denmark)
	From the Beats to the Bible (2010) - Uffe Ipsen REVIEW (/½)*

One Small Step for Landmines (US) see: Samples etc.

One Starving Day (Italy) see: Samples etc.

One Ton (Canada) see: Samples etc.

One Truth (US, CCM)
	Gospel Truth (197?) - Chamberlin - George Smitty Price *REVIEW (½/T)**

One Way Ticket (UK)
	Return Journey (2017, recorded 197?) - Damon Lyon Shaw

Marykate O'Neil (US) also see: Samples etc.
	Marykate O'Neil (2002) - Chamberlin - Brad Jones REVIEW (½/T)**

Onion Band (UK, folk)
	Now There's a Thing...! (1988) - Pug Rayner [as The Celebrated Onion Band] Entirely Made of Wood! (1991) - Pug Rayner/Tony O'Neil Funny Old Business (1997) - Pug Rayner/Tony O'Neil REVIEW (½/T½)*

Only Children (US, Americana) see: Samples etc.

Yoko Ono (Japan/US)
	Feeling the Space (1973) - Ken Ascher [as Yoko Ono/Plastic Ono Band] REVIEW (/T½)* A Story (1997, recorded 1974) - Ken Ascher REVIEW (/T½)*

Opeth (Sweden, progressive metal) also see: Samples etc.
	Heritage (2011) - Mikael Åkerfeldt/Per Wiberg REVIEW (½/TTTT (TTTT½)) In Cauda Venenum (2019) - Joakim Svalberg REVIEW (½/TT)*

Opium Cartel (Norway, progressive pop)
	Night Blooms (2009) - Jacob Holm-Lupo/Mattias Olsson/Lars Fredrik Frøislie REVIEW (½/TT)* Ardor (2013) - Mattias Olsson/Stephen James Bennett REVIEW (½/T½)* Fair Light E.P. (2014) - Mattias Olsson? REVIEW (/T½)* Valor (2020) - Jacob Holm-Lupo REVIEW (/T)*

Orange Humble Band (US)
	Humblin' (Across America) (2001) - Chamberlin - Mitch Easter REVIEW (½/TT)* Depressing Beauty (2015) - Rick Steff REVIEW (/½)*

Orange Peels (US)
	Circling the Sun (2005) - Allen Clapp/Bryan Hanna REVIEW (½/TTT)*

Orange Wedge (US, hard rock)
	No One Left But Me (1974) - Mark O'Connor REVIEW (½/TT)*

Oranger (US, powerpop) see: Samples etc.

Oranj Symphonette (US)
	The Oranj Album (1998) - Mellotron & Chamberlin - Rob Burger REVIEW (½/½)*

Oranssi Pazuzu (Finland, black metal)
	Valonielu (2013) - Evill REVIEW (½/T½)*

Orchestra Noir (UK) see: Samples etc.

Orchestral Manoeuvres in the Dark (UK, synth pop) also see: Samples etc.
	The Romance of the Telescope (unfinished) (1981 b-side) - Paul Humphrey/Andy McCluskey REVIEW (½/T½)* Architecture & Morality (1981) - Paul Humphrey/Andy McCluskey REVIEW (½/TT½ (TTT))* Maid of Orleans/Navigation (1982 single) - Paul Humphrey/Andy McCluskey REVIEW (½/TTT½) Dazzle Ships (1983) - Paul Humphrey/Andy McCluskey? REVIEW (½/TT)*

Tim O'Reagan (US)
	Tim O'Reagan (2006) - Chamberlin - Pete Sands REVIEW (½/T)*

Martin Orford (UK, progressive) see: Samples etc.

Orion (US)
	Sometimes Words Just Get in the Way (1975) - Dominic Francese REVIEW (½/½)**

Orion the Hunter (US, hard rock/AOR)
	Orion the Hunter (1984) - John Schuller REVIEW (/½)*

Le Orme (Italy, progressive)
	Uomo di Pezza (1972) - Toni Pagliuca REVIEW (½/TT½) In Concerto (1974) - Toni Pagliuca REVIEW (½/TT)* Contrappunti (1974) - Toni Pagliuca REVIEW (/T) Smogmagica (1975) - Toni Pagliuca REVIEW (/T)* Verità Nascoste (1976) - Toni Pagliuca REVIEW (½/T)* Live Orme (1986, recorded 1975-77) - Toni Pagliuca REVIEW (½/½)*

Ornah-Mental (Germany) see: Samples etc.

Orne (Finland) see: Samples etc.

Ornithos (Italy) see: Samples etc.

Orphan (US, country/rock)
	More Orphan Than Not (1974) - Dan Frye REVIEW (½/T)**

Palito Ortega (Argentina)
	Un Canto a la Vida (1974) - ? REVIEW (/T)**

Pat Ortman (US) see: Samples etc.

Osada Vida (Poland, progressive metal) see: Samples etc.

Osamu (Japan, progressive)
	Osamu (1977) - Chamberlin - Brian Whitcomb REVIEW (½/½)*

Osanna (Italy, progressive) also see: Samples etc.
	Palepoli (1973) - Lino Vairetti REVIEW (½/TT½) Landscape of Life (1974) - Lino Vairetti/Danilo Rustici REVIEW (½/TT½)*

Joan Osborne (US)
	Relish (1995) - Rob Hyman/Chris Palmaro REVIEW (/T½)

Ozzy Osbourne (UK, hard rock)
	Ozzmosis (1995) - Michael Beinhorn REVIEW (/T½)*

Oscar (UK)
	Oscar (1974) - "Oscar Bamforth" REVIEW (½/TT)**

The Osiris Club (UK, progressive) also see: Samples etc.
	The Green Chapel (2021) - Andy Prestidge REVIEW (½/TTT)*

Ómar Óskarsson (Iceland)
	Middle Class Man (1974) - Jakob Magnússon REVIEW (½/½)**

Marie Osmond (US, country)
	This is the Way That I Feel (1977) - Randy McCormick or Tim Henson REVIEW (/TT)**

Kurt Ostbahn & die Kombo (Austria) see: Samples etc.

John Oszajca (US) see: Samples etc.

Otep (US) see: Samples etc.

Other Lives (US) see: Samples etc.

Otto (Brazil)
	Condom Black (2001) - Apollo 9 REVIEW (½/T½)**

Ottoman (US) see: Samples etc.

Ougenweide (Germany, folk rock)
	Frÿheit (1978) - Lutz Rahn REVIEW (½/T)*

Our Broken Garden (Denmark) see: Samples etc.

Our Friend the Atom (US) see: Samples etc.

Ours (US)
	Distorted Lullabies (2001) - Jimmy Gnecco/Chamberlin - Patrick Warren/Mark Endert REVIEW (/TT½)*

Out of the Grey (US)
	(See Inside) (1997) - Phil Madeira REVIEW (/½)**

Outer Limits (Japan, progressive) also see: Samples etc.
	Misty Moon (1985) - Shusei Tsukamoto REVIEW (/TT) A Boy Playing the Magical Bugle Horn (1986) - Shusei Tsukamoto REVIEW (½/TT)* The Scene of Pale Blue (1987) - Shusei Tsukamoto REVIEW (½/T½)* Outer Mania (1994, recorded 1980-84) - Shusei Tsukamoto [1980/81 tracks] REVIEW (½/TT)*

Outer Space (US) see: Samples etc.

Over the Rhine (US, art-pop)
	Good Dog Bad Dog (1996) - Ric Hordinski REVIEW (½/T)* Besides (1997) - Linford Detweiler REVIEW (½/T) Ohio (2003) - Linford Detweiler REVIEW (*½/T) The Trumpet Child (2007) - Chamberlin - Brad Jones REVIEW (½/T)* Meet Me at the Edge of the World (2013) - Chamberlin - Patrick Warren REVIEW (/T)*

Jessica Owen (Canada) see: Samples etc.

Judith Owen (UK)
	Mopping Up Karma (2008, recorded 1998) - Chamberlin - Patrick Warren REVIEW (½/TT)**

Buck Owens (US, country)
	It's a Monster's Holiday (1974) - Jim Shaw REVIEW (/TT) 41st Street Lonely Hearts Club (1975) - Jim Shaw REVIEW (/½)

Ginny Owens (US, CCM) see: Samples etc.

Owl Watches (US) see: Samples etc.

Owsley (US)
	Owsley (1999) - Mellotron & Chamberlin - Will Owsley/Chamberlin - Jonathan Hamby REVIEW (/T½)* The Hard Way (2003) - Chamberlin - Jonathon Hamby/John Painter REVIEW (/T)*

Ozzie (US)
	The Parabolic Rock: 1975-1982 (2010) - William Fuller REVIEW (/½)*