 Some thirty years after "Step Across the Border" was released, director Humbert reviewed over thirty hours of audio tape that were not used in the film.Humbert and French sound designer, Marc Parisotto used these tapes to create a sound collage of ambient noise and performances by Frith, Cora, Ted Milton, Bittová, Haco and Zorn.The result was presented at a Berlin cinema in January 2019 with Frith improvising on guitar live over the sound piece.