• Oak
  Carey Clayton
• Oasis
  Ensemble Al Asdeka
• Occult
  Opened Paradise
• Ocean Views
  4oresight
• Octopants
  Glen Bledsoe
• Of Glitters and Zen
  My Equinox Divine
• Of the Lovely
  Arthur Yoria
• Of This Dirt
  Artemis
• Off the Rails
  The Old Recruits
• Oh Yes
  Ben Rusch
• Ohhh Henry! - Songs of Henry Purcell
  Susan Rode Morris
• Ohio Sessions, April to June
  The Town Monster
• Ohio Sessions, January to March
  The Town Monster
• Ohio Sessions, July to September
  The Town Monster
• Ohio Sessions, October to December
  The Town Monster
• Ol Jed's a Millionaire
  Monte Casino
• Old Friends
  Peggy Duquesnel
• Old School Old Time
  Fiddle Whamdiddle
• Omogin
  Takashi Matsuishi Spark
• On My Way
  Wet City Rockers
• On Surfari Sessions Volume 1
  Chad Farran
• On the Move
  Kiwi
• On the Wave's Wings
  Dmitry Krasnoukhov
• On the Wings of the Renaissance
  Olexa Kabanov
• One Armed Bandits
  The Raindoggs
• One Drop Imposter
  Conway Hambone
• One Hour Long Bird Song
  Sambodhi Prem
• One Life Left
  Iordache
• One Music
  Kato Kahra
• One Step Closer
  Ray Montford
• Only a Tronic Selection
  Ambient Teknology
• Only the Missile
  Robin Grey
• Ontogeny
  Kourosh Dini
• Open Heart (Tantric Breath)
  Angelight
• Open Sezame
  The Great Mooklaa Herashaa
• Open Window
  Robert Rich
• Open Window Sessions
  Snowsleep
• Opium
  Sherefe
• Optimism in E minor
  Broken Poets
• Opus2
  Superdirt2
• Orbits
  Artemis
• Oriental Spaces
  Homeless Balloon
• Original Instrumental Acoustic Guitar Songs Vol 1
  Antiqcool
• Orpheus
  Federico Moscogiuri
• Ostara
  Skarazula
• OTiS
  OTiS
• Oubaitori
  Kalotone
• Our Wet Geometry
  Daniel Knowler
• Out Of It
  Brad Sucks
• Out of the Blue
  Tilopa
• Out of Thin Air
  Intersonic Subformation
• Outside Forces
  Music Inside
• Outsider Grooves
  Conway Hambone
• Over Seven Seas
  Koshanin
• Over the Waves
  Olexa Kabanov
• overnight low
  dammerson vaughan
• Own the Pow'r of Harmony! - hidden vocal and instrumental gems of Handel
  Jennifer Lane