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 temporary stop to the debate as to whether the genre was dead. Nevertheless, composers began to explore the "more compact form" of the concert overture "...as a vehicle within which to blend musical, narrative and pictoral ideas." Examples included Mendelssohn's overtures "A Midsummer Night's Dream" (1826) and "The Hebrides" (1830). Between 1845 and 1847, the Belgian composer César Franck wrote an orchestral piece based on Victor Hugo's poem "Ce qu'on entend sur la montagne". The work exhibits characteristics of a symphonic poem, and some musicologists, such as Norman Demuth and Julien Tiersot, consider it the first of its genre, preceding