This project is a collection of four arrangements from Gustav Mahler’s Des Knaben Wunderhorn for French horn and marimba, with accompanying commentary. French horn and marimba is a beautiful combination that suffers from a lack of repertoire. These arrangements, composed by Kyle Nelson, are a step toward remedying that problem, while exploring the wide range of musical styles for which this combination is suited. The four songs that have been transcribed here are Urlicht, Wo die schönen Trompeten blasen, Der Tamboursg’sell, and Des Antonius von Padua Fischpredigt. Together, they provide a sampling of the many poems Mahler put to music in the late 1800’s for voice and piano. The sampling ranges from the very well-known (such as those featured in Mahler’s symphonies, like Urlicht) to one of the few lighthearted arrangements (Des Antonius von Padua Fischpredigt’s scherzo trio style) found in Mahler’s two original collections of lieder. The final product is performable as a duet with a talented horn and marimba duo, but in some circumstances it may be beneficial to divide the marimba part by stem direction and play as a trio on horn and two marimbas. The marimba part is best suited for four mallets on a 5-octave marimba.