Ball, Tzara, Huelsenbeck and Arp were fellow-founders with Jancohttps://www.jewishvirtuallibrary.org/janco-marcel of Zürich Dada (Richter came along a little later). Tzara got Janco and Huelsenbeck to recite simultaneist verse with him at Cabaret Voltaire, which had been started by Ball. Janco’s posters and masks were always cited as an important ingredient in the mix (he and Tzara had worked together on a journal in Bucharest before heading west). Hennings, Ehrenstein and Eggeling were all involved too.