1. Emotional, rock, pop band from Japan.
太田 美音 (Ota Mio) Vo.&Gt.
佐藤 穂奈美(Sato Honami) Dr.&Cho.　(also drummer of ゲスの極み乙女。)
http://microcosm-official.blogspot.com/

2. Technical Death Metal from Brighton, UK. They released one album in early ’90s.

Last known line-up:
Rob Baloo - Vocals
Cal Scott - Guitar/Synth
Ben Hussane - Bass
Morti - Drums

http://www.metal-archives.com/bands/Microcosm/91037
http://microcosm.bandcamp.com/

3. A Drum n' Bass artist

http://www.shazam.com/music/web/artist?id=2934497

4. A Norwegian psytrance/full-on group consisting of members Georg Simonsen and Fredrik Larsen. They were active during the late 1990s and have only one release "Higher Levels" to their name which was originally not meant to be released, but has recently been made available by Ektoplazm. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.