Whenever Kendall Knight was angry,it was not easy to get him to calm down from the anger he's feeling for anybody. But when it comes to light that the sound of his friend James Diamond's voice was able to calm him down, it's shocking mainly because nobody ever knew that the anger can be calmed rather simply because that's not how it was seen. The way it's seen was that nothing could calm Kendall down. The sound of James Diamond's voice calms him.