Imagine writing over a thousand pieces of music in your lifetime. Now imagine that almost nobody remembers your name after you die. That is what happened to Johann Sebastian Bach. Born on March 31, 1685, in a small German town called Eisenach, Bach grew up surrounded by music. His father, uncles, and brothers were all musicians. Music was the family business. Bach became a master of the organ and the harpsichord. He worked as a church musician for most of his life, writing music for services every week. His compositions were incredibly complex. He could weave multiple melodies together at the same time, like braiding several songs into one. But after Bach died in 1750, the world mostly forgot about him. Music styles changed, and his work was considered old-fashioned. Almost eighty years later, a young composer named Felix Mendelssohn performed one of Bach's greatest pieces for a huge audience. People were stunned. The music was as powerful as anything written since. From that moment on, Bach's reputation was restored. Today, musicians consider him one of the greatest composers who ever lived. His music is played in concert halls, churches, and even in movies and video games.