Ken Watanabe

- Storm (feat. Kumiko Maruyama)
- My Wetland Dream - Storm (feat. Kumiko Maruyama) - Single · 2021
- My Wetland Dream - Storm (feat. Kumiko Maruyama)
- My Wetland Dream - Storm (feat. Kumiko Maruyama) - Single · 2021
- Woman to Woman (feat. Joey Asuncion)
- Woman to Woman (feat. Joey Asuncion) - Single · 2020
- Pray - Hope (Japanese Version) [feat. Kumiko Maruyama]
- In the Age of Wondering - Four Works (Japanese Version) [feat. Kumiko Maruyama] - EP · 2020
- Ideology (Japanese Version) [feat. Kumiko Maruyama]
- In the Age of Wondering - Four Works (Japanese Version) [feat. Kumiko Maruyama] - EP · 2020
- Religious Conflict (Japanese Version) [feat. Kumiko Maruyama]
- In the Age of Wondering - Four Works (Japanese Version) [feat. Kumiko Maruyama] - EP · 2020
- Revolution (Japanese Version) [feat. Kumiko Maruyama]
- In the Age of Wondering - Four Works (Japanese Version) [feat. Kumiko Maruyama] - EP · 2020
- Nagasaki Song (Instrumental) [feat. Tetsuya Kataoka & Mimi Kimikado]
- Nagasaki Song (feat. Tetsuya Kataoka & Mimi Kimikado) - Single · 2019
- Nagasaki Song (feat. Tetsuya Kataoka & Mimi Kimikado)
- Nagasaki Song (feat. Tetsuya Kataoka & Mimi Kimikado) - Single · 2019
- Ihoujin
- Ihoujin - Single · 2019
- Someday (English Version)
- Someday (English Version) - Single · 2019
- I Love You (Cover)
- I Love You (Cover) - Single · 2019
- Tears / Bwv 930 (feat. JS Bach & Kumiko Maruyama)
- Tears (English Version) - Single · 2019

Top Songs