Beethoven’s deafness affected his musical output because he really couldn’t perform it, or direct it. He could still masterfully write it. I think it affected some of his pieces by what they represent. His later pieces tend to be a bit darker with his deafness obviously troubling him. With it being difficult to interact with people he could turn to the one thing he understood without words and a voice, his music. I think it allowed him to focus on it more intensely without any distractions. Therefore, I think he was allowed to put out his work more effectively with music being his salvation.