The document summarizes key aspects of the Classical period including: - The Classical period spanned the 18th-19th centuries and was also known as the Neo-Classical or Enlightenment era. - Two important new musical forms emerged - the sonata and symphony. Franz Joseph Haydn and Wolfgang Amadeus Mozart were two of the greatest composers of the time. - Mozart was a child prodigy who composed his first symphony at age 8 and died poor at age 35. Haydn helped develop the orchestra and symphony and was known as the "Father of the Symphony".