For ten points, name this composer who played a major role in establishing Finnish national identity, especially with his pieces Karelia Suite and Finlandia.
This composer's fourth symphony features extensive use of tritones, while his second symphony's third movement was partially inspired by Mozart's "Don Giovanni". There is evidence that he began writing an eighth symphony, though he completed only the tone poem Tapiola, and incidental music for The Tempest after his seventh. One of his works features the Alla Marcia march, and his most famous work was written as a protest against (*) Russian rule of his country.  For ten points, name this composer who played a major role in establishing Finnish national identity, especially with his pieces Karelia Suite and Finlandia.
This composer's fourth symphony features extensive use of tritones, while his second symphony's third movement was partially inspired by Mozart's "Don Giovanni".
Jean {Sibelius}