How old was Beethoven when he wrote the first music?

Beethoven is best

known for his nine symphonies, which have been called the

cornerstones of Western civilization. The most famous two are the

Fifth Symphony and the Ninth Symphony because of their grandeur.

The Moonlight is best remembered for it's dream-like opening. The

Pathetique, on the other hand, is a passionate and desperate work

which requires that the symphony produce a loud, overwhelming

sound.