Haydn is the father of symphony, the famous Austrian composer Haydn (1732-1809), one of the most famous musicians in Europe in the 18th century and an outstanding representative of "Viennese classical music". His musical styles range from vocal to instrumental music, and he has made outstanding contributions to the formation, perfection and development of symphonies and string quartets. He is recognized as the "Father of the Symphony" and the "Father of the String Quartet". Representative works: "Farewell" "Block", "Hunting", "Surprise", "Army", "London", "Newton", "Beethoven", etc. Ludwig Beethoven (1770-1827), one of the greatest musicians in Germany, is known as "Music Saint". He is the last representative of the "Vienna School of Classical Music" and, together with Haydn and Mozart, is known as the "Viennese Trio". In his short 57-year career, he left priceless musical treasures to mankind. Therefore, the world calls him a "music saint." Representative works: "Ode to Joy", "Fifth Symphony", "Passion" Sonata", "Moonlight", "Storm Sonata", "Pastoral Symphony", etc. Mozart's main works: operas "The Marriage of Figaro" and "Don. Symphony No. 39 in E flat major, Symphony No. 39 in Juan, Symphony No. 40 in G minor, Symphony No. 41 in C minor, Cubit Concerto No. 4 in D major, B flat major Violin Concerto No. 5 (Mozart), Piano Concerto No. 23 in A major, and other string quartets, Hunter