3. Ludwig van Beethoven
One of the most famous composers of all time, Beethoven started to lose his hearing around the age of 26 while also experiencing severe tinnitus, or ringing in the ears. He utilized hearing aids, including the ear horn, to aid in the management of his hearing loss. Not many years passed before he had nearly completely lost his hearing. At the end of his Ninth Symphony premiere, he was unable to hear the audience's applause, and someone turned him around to witness it, after which he sobbed. Beethoven's loss of high frequency hearing has led some to believe this influenced his emphasis on middle and lower frequency notes in later works.
Fun fact: Beethoven would plunge his head into cold water to keep himself awake and alert while composing.