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 and, Clapham writes, "extended the scope and purpose of the symphonic poem beyond the aims of any later composer". Clapham adds that in his musical depiction of scenery in these works, Smetana "established a new type of symphonic poem, which led eventually to Sibelius's "Tapiola"". Also, in showing how to apply new forms for new purposes, Macdonald writes that Smetana "began a profusion of symphonic poems from his younger contemporaries in the Czech lands and Slovakia", including Antonín Dvořák, Zdeněk Fibich, Leoš Janáček and Vítězslav Novák. Dvořák wrote two groups of symphonic poems, which date from the 1890s. The first,