Not’under Stein a.k.a. Stein dj was born in 1984.He was interested in music since he was a kid, but had a chance to start dj-ing in the beginning of 2004. Then he founded the project "Keep It Underground" together with his friend and colleague Bineff. That happened in a moment when house music in Bulgaria was gaining popularity along with the leading role of music fading away, it all had become fashion, drugs and fancy places. So "Keep It Underground" was about keeping it all..