Jean Sibelius was a renowned Finnish composer of the late Romantic period. Some synonyms for Sibelius might include "musician," "maestro," or "composer." Additionally, one could refer to him as a "Nordic composer," as his music is often associated with the landscapes and folklore of Finland. Sibelius was particularly known for his use of nationalistic themes in his compositions, which include symphonies, tone poems, and chamber music. He is considered one of the most important composers in Finnish history, and his legacy has inspired countless musicians and composers both in Finland and around the world.