Task: Text Categorization
Input (English): This artist's move to more nationalistic music was marked by "The Leafy Grove Howls," which was expanded in songs based on Nestor Kukolnik's work, such as A Farewell to St. Petersburg and Prince Kholmsky. He is also responsible for pieces related to Spain like Recuerdos de Castilla and Jota aragonesa, which came around the same time as the tone poem Kamarinskaya. One of his operas contains music in the gusli and bilina styles for Bayan, and also uses a whole-tone scale to depict the dwarf Chernomor, who abducts one of the title characters. Another opera ends with the chorus "Slav'sya," which comes after the Poles are repulsed and Susanin has sacrificed his life. An inspiration to the Five, for 10 points, name this composer of A Life for the Tsar and Ruslan and Ludmila.
Output (English): Fine Arts