Which is true of schuberts erlking?

Schubert's "Erlkönig" is a dramatic Lieder based on a poem by Johann Wolfgang von Goethe, exploring themes of fear, death, and the supernatural. The piece features a dialogue between a father, his son, and the eerie Erlking, with the music vividly reflecting the emotional tension and urgency of the narrative. It is notable for its rapid piano accompaniment, which mimics the galloping of a horse, enhancing the sense of impending doom as the father tries to comfort his frightened child. The work is celebrated for its expressive intensity and showcases Schubert's mastery of vocal and instrumental interplay.