Sigfrid Karg-Elert (November 21, 1877 – April 9, 1933)
Opus 10 is Six Sketches for Harmonium and the music is attached below.
1. Morgensegen. (Prière de matin. Morning-prayer.) - F-sharp major
2. Ausfahrt. (Départ. Departure.) - E major
3. Waldeinsamkeit. (Solitude de la forêt. Sylvan solitude.) - D-flat major
4. Spätsonne. (Soleil couchant. Sunset.) - D major
5. Nachtgesang. (Chant nocturne. Night song.) - A-flat major
6. Nachklang. (Réminiscence.) - B major
Although for harmonium I feel this piece pairs nicely with Aus dem Norden, Op.18/2.
https://www.contrebombarde.com/concerthall/music/48085