Haydn's composition practice also influenced Mozart and Beethoven. Beethoven's early works were often played in a long and loose way, but later he used Haydn's method in his so-called "intermediate stage", that is, he gradually developed a highly organic musical structure on very simple tones.
Extended data
Haydn's major contributions: Haydn's major contributions to classical music are symphonies and quartets. Because of his great contribution to the formation and perfection of symphony genre, he is called "the father of symphony".
Haydn's character is kind, sincere and simple, and he is a humanist. These characteristics of him are clearly reflected in his music. He is also very enthusiastic about young musicians. Composers such as Mozart and Beethoven have asked Haydn for advice and called him "our father".
Baidu Encyclopedia-Franz Joseph Haydn