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In page Ilmatar:

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Jean Sibelius composed the Finnish epic tone poem Luonnotar, for soprano and orchestra in 1913. In this work, the mythical origin of the land and sky (recounted in verses from the Kalevala) becomes an intense Sibelian metaphor for the inexorable force of terror of all creation. Considered to be one of the composer's most compelling works, it alternates between two musical themes. As heard at the outset, these are the shimmering stirrings of ever-growing possibility; and, underpinned with dissonant, static, harp strokes, the even more incantatory, distressed cries of the "nature spirit" (Luonnotar) herself, heavy with child.[citation needed]