Thomas Edison was almost totally deaf, but not entirely.
By the age of 13, he had only partial hearing in his right ear and his left was nearly as bad.
Despite this, he still insisted on having the final say at the Edison Record Company on what music was recorded and released, and he was pretty grumpy about the fact that his invention was being used for sappy ballads and jazz.
Edison was noted as saying, “I don’t want the phonograph sold for amusement purposes. It is not a toy. It is for business purposes only.”