Des Knaben Wunderhorn
Des Knaben Wunderhorn: Alte deutsche Lieder (German for "The boy's magic horn: old German songs") is a collection of German folk poems and songs edited by Achim von Arnim and Clemens Brentano. The book was published in three volumes, the first in 1806, followed by two more in 1808.
The collection of love, soldiers, wandering, and children's songs was an important source of idealized folklore in the Romantic nationalism of the 19th century. Des Knaben Wunderhorn became widely popular across the German-speaking world; Johann Wolfgang von Goethe, one of the most influential writers of the time, declared that Des Knaben Wunderhorn "has its place in every household".