The Symphony No. 5 in C minor of Ludwig van Beethoven, Op. 67, was written between 1804 and 1808. As is typical of symphonies in the classical period, Beethoven's Fifth Symphony is in four movements.
I read and learned this in my music class!!
The introduction of Bach to music had quite an impact. Before Bach, many were ill - tempered and most became well - tempered after Bach. Harmonically speaking, Back's composition were way ahead of time. He introduced unexpected chord changes. He also initiated the keyboard technique that is still used up to date.