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 Latvian noise project conducted by members of Antireality and ray of the radiation, based on distorted soundscapes by bass guitar and analogue synthezaurus. Two albums are available: Aural Nihilism (1998) and Magnetism (2003).