This morning her sister, Christa Vis, had said at Radio M Utrecht that at least 20 women would come. After Christa posted the song on YouTube on Sunday Pray of the mothers saw, in which Palestinian and Israeli mothers sing together for peace, she decided to call on the choir in which she sings to come to the Utrecht city office. The ball started rolling through the grapevine, so today there were not 20 women singing for peace, but 150. “All women want to do something,” she says.