HQCD Artists, Casts, Authors Beginning with O
- OGANO KUMI
- OGAWA MICHIKO
- OHTAKI EIICHI
- OHTAKI EIICHI
- OHTSUKI KENJI
- OHZORA HARUMI
- OKADA NANA
- OKISAWA NODOKA YOMIURI NIPPON SYMPHONY ORCHESTRA
- Oliver Knussen
- Oliver Nelson
- OMIYA KYOUKO & Orange
- OMURA KENJI.AKIYAMA KAZUMASA.MORIZONO KATSUTOSHI.YAMAGISHI JUNSHI
- OMURA KENJI.WATANABE KAZUMI.MORIZONO KATSUTOSHI.YAMAGISHI JUNSHI
- ONE LINE BAND
- Onyanko Club
- ORIGINAL LOVE
- ORIGINAL LOVE
- Oscar Peterson
- Oscar Pettiford
- Oslo Philharmonic Orchestra
- OSLO PHILHARMONIC ORCHESTRA
- Otmar Suitner/Berlin Staatskapelle
- Otmar Suitner/NHK Symphony Orchestra
- Otmar Suitner/Staatskapelle Dresden
- Otto Klemperer
- Otto Klemperer
- OZAKI AMII