Simultan Krippenspiel (Concert bruitiste) is a dadaistic Christmas play by Hugo Ball. It is written almost entirely in sounds and noises, a characteristic of Ball's famous sound poetry. The play uses a range of sound effects and vocalizations to tell the story of the Nativity, from the sound of the wind to the cries of animals and the laughter of angels. The play is a critique of traditional Christmas storytelling and a celebration of the absurd and the nonsensical. It is a unique and challenging work of art that explores the power of sound and the possibilities of theatrical expression.