Jean Sibelius (; Finland Swedish: [siˈbeːliʉs] ; born Johan Julius Christian Sibelius; 8 December 1865 – 20 September 1957) was a Finnish composer of the late Romantic and early modern periods. He is widely regarded as his country's greatest composer, and his music is often credited with having helped Finland develop a stronger national identity when the country was struggling from several attempts at Russification in the late 19th century. .
https://en.wikipedia.org/wiki/Jean_Sibelius