Mark McGuire is an American musician living and working in Portland, OR, his principle instrument being the guitar and using various forms of electronic manipulation. Despite being best known as member of Cleveland electronic group Emeralds (alongside John Elliott and Steve Hauschildt), his solo work is as far reaching and expansive, with something in the region of 40 releases to his name, including releases for Wagon, Arbor, VDSQ, Weird Forest and Editions Mego.

Bartek Weber is a Polish musician based in Warsaw, the founder of the cult band Baaba, for which he plays guitar and sampler to create a unique mix of jazz, electronics, metal pastiche and more. He is also a guitarist in the equally infamous group Mitch&Mitch, who have caused havoc across Poland, Europe and beyond.