Sleepstream are a post-rock band originating from Thessaloniki, Greece. They were formed by Steven (guitars and synths) and Nio (drums, percussion) during winter 2008, with Gus V. on the bass, as an experimental-progressive trio. By summer 2009 Nio and Gus left the band for occupational reasons, leaving Steven experimenting with different musicians, leading to a more polyphonic-atmospheric result. Nio’s return six months later closed any remaining gaps and the band’s music gradually got to today’s form.