When did the 'Classical period' begin and what happened during that time? (site 1)

Lasted from approximately 1775 to 1825, The classical period was applied to the arts and literature. A time for Philosophers, Painters, Musicians, Singers, Writers, etc for enlightenment. Also in this era, Public concerts became an important part of the music scene and became more popular than ever. Unlike the Renaissance or Baroque periods, which did have popular artists and philosophers come to light, the choral music of the classical era was dominated by composers, Franz Joseph Haydn (1732-1809), Wolfgang Amadeus Mozart (1756-1791), and Ludwig van Beethoven (1770-1827)