The composer of the famous symphony known as "Ode to Joy" is Ludwig van Beethoven. This piece is part of his Ninth Symphony, completed in 1824, and is renowned for its powerful choral finale. The music of "Ode to Joy" reflects themes of unity, brotherhood, and peace, set to the poem by Friedrich Schiller. It has since become an anthem for various movements advocating for human rights and freedom, symbolizing hope and the potential for global harmony.