- Name: Yuuji Yoshizawa (吉澤裕司)
- Birthdate: May 19th, 1984
- Website: http://www.soundsofkeys.com/
- Twitter: https://twitter.com/kenbanyuji, https://twitter.com/red_glasses_
- SoundCloud: https://soundcloud.com/yu-ji
Yuuji Yoshizawa made his debut in BEMANI as one of the two winners of the Boku mo Watashi mo pop'n Artist! (ボクもワタシも★ポップンアーティスト!) contest for pop'n music 20 fantasia and has since become a regular contributor to the series.
Yuuji has regularly appeared in the ノスタルジア series as well, mostly working on a handful of the piano covers for the series.
- red glasses
- red glasses Trio (member of, with Tetsuya Ueda and Hiroshi Matsuo)
- Double Imitation (2015, with とろまる)
- Un Seul Voyage (2018, with とろまる)
- ×3 chemical lab (2019, with Manami Fujino and m@sumi)
- time chameleon (2018)
- Dear Mermaid (2018, with うさおりーぬ)