its the opposit way! Dominik plays a lot of "Schaffmeddinghausen" Tracks, Extrawelt is just one of a few projects of both. If you wanna go deeper in this, search for refernces like : Spiralkinda, Spiralallianz, Midimiliz. They produce a lot. And in past, there was some place in Dominics set's for Schaffmedinghausen goodys .