Symphony No. 3, also known as the Eroica Symphony, is a significant orchestral work composed by Ludwig van Beethoven in 1803-1804. It marked a turning point in classical music, moving away from the traditional forms of the Classical period and embracing a more expressive and innovative style. The symphony is notable for its emotional depth and complexity, reflecting themes of heroism and struggle. The Eroica Symphony consists of four movements, with the first movement being particularly famous for its bold and dramatic opening. Originally dedicated to Napoleon Bonaparte, Beethoven later changed the dedication to "the memory of a great man" after Napoleon declared himself emperor. This symphony is often regarded as one of Beethoven's most important works and a precursor to the Romantic period in music.