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 Therefore, other than Strauss and numerous concert overtures by others, there are only isolated symphonic poems by German and Austrian composers—Hans von Bülow's "Nirwana" (1866), Hugo Wolf's " Penthesilea" (1883-5) and Arnold Schoenberg's "Pelleas und Melisande" (1902-3). Because of its clear relationship between poem and music, Schoenberg's "Verklärte Nacht" (1899) for string sextet has been characterised as a non-orchestral 'symphonic poem'. Alexander Ritter, who himself composed six symphonic poems in the vein of Liszt's works, directly influenced Richard Strauss in writing program music. Strauss wrote on a wide range of subjects, some of which had been previously considered unsuitable to