Julian and Maxwell Stein are twins from Pennsylvania,  USA. They have been living and working in Montreal for the past 4 years, studying electroacoustics & making sound-works all throughout the city - and very often they make sound works WITH the city. Julian and Max are both research assistants of Sandeep Bhagwati's matralab, at the Hexagram research centre. 

MTL Sound Map is an interface the Stein's designed in 2009, and since have been commissioned to design similar soundmaps for cities around the world including Stockholm, and Brussels.