When his face is not in silhouette , he covers its upper half with a black cloth .
In the show , Nathanson keeps his appearance anonymous , filming himself in silhouette while sitting at a piano in a dark room .
When Nathanson 's face is not in silhouette , Nathanson covers its upper half with a black cloth .
In the show , Nathanson keeps his appearance anonymous , filming himself in silhouette while sitting at a piano in a dark room .