Ludwig van Beethoven (17 December 1770 – 26 March 1827) was a Human composer.
In 2154, Captain Jonathan Archer and Daniels saw an image of Beethoven in the time stream as the timeline reset itself. (ENT episode: "Storm Front")
In 2373, the Cardassian composer Ilani Tarn performed some of Beethoven's sonatas arranged for the trikolat in a concert on Earth. (DS9 novel: Hollow Men)