Johan Julius Christian Sibelius, also known as Jean Sibelius, was a Finnish composer widely recognized for his groundbreaking works in the late 19th and early 20th centuries. Synonyms for Sibelius include "the pride of Finland," "a musical genius," and "a pioneer of modern classical music." His compositions are notable for their use of Finnish folk music, creating a distinct national style. Some of Sibelius's most acclaimed pieces include the Symphony No. 2, Laudamus Te, The Swan of Tuonela, and Finlandia. His work has had a significant influence on the classical music world and continues to inspire composers today.