He got Keith Richards (an easy one) after 21 questions.
I really stumped him with Martin Hayes (famous within Irish music) my favorite fiddler. He guessed someone I never heard of after 21 questions, then guessed a Turkish singer, then after 31 questions guessed Rick Astley, then he admitted defeat. I guess he's not a fan of Irish music, or Martin Hayes is not in the data base, (Well, I just added Martin Hayes to the database!)