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Some piano and chamber works, such as Arnold Schoenberg's string sextet "Verklärte Nacht", have similarities with symphonic poems in their overall intent and effect. However, the term symphonic poem is generally accepted to refer to orchestral works. A symphonic poem may stand on its own (as do those of Richard Strauss), or it can be part of a series combined into a symphonic suite or cycle. For example, "The Swan of Tuonela" (1895) is a tone poem from Jean Sibelius's "Lemminkäinen Suite", and "Vltava" ("The Moldau") by Bedřich Smetana is part of the six-work cycle "Má vlast".