That sounds right. My son has been to several of his concerts and got to meet him backstage. Says he is super super nice person, deserves all his success.etc. His last name if that is really his name, sounds Eastern European, a good place to pick up A- trait.
He may even be a pseudo non-P , tailoring his behavior as a performer to his designed personae. When you think about it, all his work is the development of one single idea: parodying extremely popular songs as a colorful, kooky singer and bandleader. So that is fairly P behavior (one single idea)