The document provides information about three famous classical composers: Franz Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven. It discusses their biographies and lists some of their most famous compositions. Haydn is described as the "Father of the Symphony" and was a mentor to Mozart and Beethoven. Mozart was a child prodigy known for his genius and for writing hundreds of pieces in a short lifetime. Beethoven faced deafness but was still considered one of the greatest composers; he produced influential works across many genres.