113797曲ヒット
- Orange☆Smoothie 戸松遥
- Orb 摩天楼オペラ
- Orchestral Fantasia 水樹奈々
- Ordinary D☆DATE
- Ordinary Dragon Ash
- Ordinary Day... 佐咲紗花
- Ordinary Days 槇原敬之
- Ordinary Girls Happiness
- Ordinary Love 松下優也
- Ordinary Magic 今井美樹
- Ordinary Man MONKEY MAJIK
- Ordinary People 平井大
- Ordinary days milet
- Ordinary hero CHEMISTRY
- Organ Chelsy
- Origin KANA-BOON
- Original Miss Monday
- Original Rhyme Animal-Mr.Drunk Remix Zeebra
- Orion U-KISS
- Orion APINK