- Name: Megumi Tatsumi (達見恵)
- Websites: http://tatsumi-megumi.petit.cc/ (old), https://tatsumi-megumi.amebaownd.com/ (new)
- Blog: https://ameblo.jp/megumin1017/
Megumi Tatsumi is the vocalist and lyricist for the duo Sea Express, partnered with composer Hiroaki Sano. The group formed in 2001 and released their first album, Smile & Music, in 2006. Both Megumi Tatsumi and Hiroaki Sano made their BEMANI debut in GuitarFreaks V4 & DrumMania V4. The duo have created several songs for the series, one for each game since their debut in GuitarFreaks V4 & DrumMania V4, and have also recently appeared in the pop'n music series.
Megumi also has provided vocals for other composers, and she often performs cover songs of the J-pop group Ikimonogakari (いきものがかり) for BEMANI.
- Prior to Summer Holiday, every original BEMANI song performed by Megumi Tatsumi and Hiroaki Sano appeared on its respective game's original soundtrack.