"Der Mond Ist Aufgegangen" is a well-known German poem written by Matthias Claudius in 1778. The poem reflects on the beauty of nature and the tranquility of the night, as the moon rises and illuminates the world. It captures a sense of peace and contemplation, inviting readers to appreciate the calmness that nighttime brings. The poem has been set to music by various composers, most notably by Johannes Brahms. Its melodic adaptation has contributed to its popularity, making it a cherished piece in both literary and musical traditions. The themes of serenity and reflection resonate with audiences across generations.