end credits on Instagram: "Ludwig van Beethoven continued composing masterpieces even after losing almost all his hearing. His method was as ingenious as it was moving: he used a metal or wooden rod connected to his piano. The composer would bite the free end of the rod while playing. The piano's vibrations traveled through the rod, passed through his teeth and skull bones, reaching directly to the cochlea in his inner ear. This process called bone conduction allowed Beethoven to bypass his dama