Keigo Oyamada

- World Citizen - I Won't Be Disappointed / Looped Piano
- Babel (Music from and Inspired By the Motion Picture) · 2006
- Futarino Hate
- Love Song Covers 3 - You & Me · 2020
- Great Five Lakes 20th (feat. Keigo Oyamada)
- Rediscover. Best, Re-Recordings and Remixes of Buffalo Daughter · 2013
- Maruchan No Shizuoka Ondo (Karaoke)
- Maruchan no Shizuoka Ondo - EP · 2013
- Maruchan No Shizuoka Ondo
- Maruchan no Shizuoka Ondo - EP · 2013
- Emerger (feat. Keigo Oyamada) [2024 Remaster]
- Page By Page (2024 Remaster) · 2009

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