Symphonic poem Tchaikovsky's work as "Isle of the Dead" (1909) does its independence from it. A similar debt to his teacher Rimsky-Korsakov imbues Igor Stravinsky's "The Song of the Nightingale", excerpted from his opera "The Nightingale". Alexander Scriabin's "The Poem of Ecstasy" (1905–08) and "" (1908–10), in their projection of an egocentric theosophic world unequalled in other symphonic poems, are notable for their detail and advanced harmonic idiom. Socialist realism in the Soviet Union allowed program music to survive longer there than in western Europe, as typified by Dmitri Shostakovich's symphonic poem "October" (1967). While France was less concerned than other countries
Symphonic poem to be shortened, Liszt tended to cut sections of conventional musical development and preserve sections of thematic transformation. While Liszt had been inspired to some extent by the ideas of Richard Wagner in unifying ideas of drama and music via the symphonic poem, Wagner gave Liszt's concept only lukewarm support in his 1857 essay "On the Symphonic Poems of Franz Liszt", and was later to break entirely with Liszt's Weimar circle over their aesthetic ideals. Composers who developed the symphonic poem after Liszt were mainly Bohemian, Russian, and French; the Bohemians and Russians showed the potential of the form as