You’d think it would be impossible to make music without the ability to hear. But Ludwig Van Beethoven, arguably the finest composer of music the world has ever seen, became fully deaf at the age of 44. He taught himself to ‘hear’ with his body, placing his teeth on the keyboard and using lower notes that he could feel more clearly. During this period he composed some of his greatest works, including the Moonlight Sonata and his only opera Fidelio.