Beethoven lived a difficult life, plagued by an abusive father, constant illness, and deafness for most of his life. He wrote his 5th Symphony between 1804-1808 while completely deaf. The symphony broke new ground through its use of dramatic tension, modulation between unexpected keys, and innovation in orchestration. It began with the famous "fate knocking at the door" four-note motif and ended in a triumphant C major key, representing Beethoven overcoming adversity through his artistic genius.