
Quick answer — Ludwig van Beethoven worked on Fullmetal Alchemist (Music), Legend of the Galactic Heroes Gaiden: Spiral Labyrinth (Music), Blast of Tempest (Music) and 9 more anime.
Ludwig van Beethoven worked on Fullmetal Alchemist (Music), Legend of the Galactic Heroes Gaiden: Spiral Labyrinth (Music), Blast of Tempest (Music), Galaxy Express 999 (Music), Your lie in April: Moments (Insert Song Composition), Excel Saga (Insert Song Composition), Thermae Romae (Music), Dragon Half (Music) and 4 more.