Oh I know he is not strumming the open strings, that’s what is so cool about it. He’s strumming extremely quickly over the entire guitar when really only one string is being played, I don’t understand how one does that. Is he somehow muting every other string but the one he’s playing? And yes I have a Big Muff but it’s from like….2009 or something. It sounds good but we all know the vintage Muffs sound better.