- 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, along 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 were mainstays for years in the series, and also appeared a few times in pop'n music as well.
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 received a long version on its respective game's original soundtrack.
- Megumi Tatsumi, alongside Hiroaki Sano, has also appeared in SEGA's CHUNITHM and maimai でらっくす series.