When a band goes onstage, there needs to be a dividing wall to the backstage area. Here, it is not only a question of shielding any noise or light sources from behind, but also of being able to illuminate this partition well.
No concert is complete without moving lights and even small events with a DJ or “garage” band are nowadays using professional light equipment.
Black stage Molton is particularly suitable here - it can be illuminated well, shields the backstage area and improves the acoustics in the room.