Antonín Leopold Dvořák (1841–1904) was a Czech composer of romantic music, who employed the idioms and melodies of the folk music of Moravia and his native Bohemia. His works include operas, symphonic, choral and chamber music. His best-known works include his symphonic works (above all "New World Symphony"), Slavonic Dances, String Quartets, Concertos for cello (Concerto in B minor) and violin, oratorial compositions Requiem, Stabat Mater and Te Deum.