The "Eroica Symphony," officially known as Symphony No. 3 in E-flat major, Op. 55, was composed by Ludwig van Beethoven in 1803-1804. It is notable for its innovative structure and emotional depth, marking a significant shift in the symphonic form. Originally dedicated to Napoleon Bonaparte, Beethoven later changed the dedication to "Eroica," meaning "heroic," reflecting themes of heroism and struggle. The symphony consists of four movements, with the first movement being particularly famous for its bold opening. The "Eroica Symphony" is often regarded as a turning point in classical music, influencing many composers and paving the way for the Romantic era. Its powerful themes and complex orchestration showcase Beethoven's genius and creativity.