There are, at least, four artists known as Atmosphere: 1) An American alternative rap band. 2) A Polish rock band. 3) An Italian disco group. 4) A Vietnamese metal band. 1) The Minnesota underground hip-hop group was formed around 1994. At its creation, the group was called "Urban Atmosphere". Unlike many hip hop groups, Atmosphere provides its own live instrumentation, usually consisting of bass guitar and drums. Atmosphere originally consisted of Spawn (MC), ANT (producer) and Slug (DJ, at the time). After Spawn left the group (now rapping under the name Rek The Heavyweight) the line up was set, with Slug, ANT and a rotating DJ.