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 expressing more clearly than anything else his identification to Finland and its mythology. The "Kalevala" provided ideal episodes and texts for musical setting; this coupled with Sibelius's natural aptitude for symphonic writing allowed him to write taut, organic structures for many of these works, especially "Tapiola" (1926). "Pohjola's Daughter" (1906), which Sibelius called a "symphonic fantasy", is the most closely dependent on its program while also showing a sureness of outline rare in other composers. With the compositional approach he took from the Third Symphony onward, Sibelius sought to overcome the distinction between symphony and tone poem to fuse their