Tatsuya Shimizu [清水達也 Shimizu Tatsuya], more commonly known as Tatsh is a Japanese music composer that is known for his compositions for the beatmania IIDX series. His first Bemani project was in 2004 on beatmania IIDX 10th style. He has worked with various other Bemani artists. Tatsh has since left Bemani to make music for various visual novels.
An (1) is a Japanese music producer focused on ArtCore. A style of electronic that fuses elements of other genres. He was heavily influenced by onoken's felys-long mix- in high school, which lead him to produce music in the year 2009. He's also the owner of the doujin circle AcuticNotes.
DystopiaGround is a project started by Nao in 2009 after leaving fripSide. This group of musicians is aiming at becoming the number one A-Pop artist in the universe. DystopiaGround songs tell the story of a fictional kingdom that existed when the world was still Pangaea. The group consists of many notable doujin and video game composers.