22 December 1808
Two hundred years ago, according to Wikipedia’s front page:
1808 – German composer Ludwig van Beethoven (pictured) premiered his Fifth Symphony, currently one of the most popular and well-known compositions in all of European classical music, at the Theater an der Wien in Vienna.
[audio:http://www.archive.org/download/BBCSymphony5Beethoven_0/symphony5_beethoven_radio3.mp3][Download]