Symphonies No. 1 and No. 3 are orchestral works by Ludwig van Beethoven, first performed in 1800 and 1805 respectively. The First Symphony reflects Beethoven's early-classical idiom with clear sonata forms and balanced orchestration rooted in the late 18th-century tradition, while the Third Symphony demonstrates a shift toward a more expansive symphonic language with extended movements, adventurous harmonies and a greater emphasis on rhythmic drive that helped pave the way for Romantic-era developments.
