In functional programming, fold refers to a family of higher-order functions that analyze a recursive structure through use of a given combining operation, recombine the results of recursively processing its constituent parts, building up a return value. Map represents an associative abstract data type composed of a collection of key, value pairs. This is exactly what is happening with the cultural scene at the very moment. We systematically and methodically change concepts, mix online and offline life and try to offer an optimal solution for events and cultural enjoyment for all participants. We present interactive art, music & design – for visitors and online guests with artists* on site and around the world. This project received state funding.