Brahms' Symphony No. 1 is a significant orchestral work composed by Johannes Brahms between 1855 and 1876. It premiered in 1876 and is known for its rich harmonies and complex structures. The symphony consists of four movements, showcasing Brahms' mastery of orchestration and thematic development. The first movement opens with a powerful introduction, leading into a lyrical main theme. The symphony is often compared to Beethoven's Ninth Symphony due to its grand scale and emotional depth. Brahms' Symphony No. 1 is celebrated for its blend of classical traditions and innovative ideas, making it a cornerstone of the symphonic repertoire.