Catchy yet funny music video

Do anybody know the guy that name PewDiePie from youtube? He is a very funny guy who play many horror games which I love his manliest scream ever mostly when he played the game called Amnesia. Now there is a video of 3 models of Amnesia's monsters dance a catchy music from Vocaloids which this made in program called mikumikudance, the video itself called "Grunt Grunt ☆ Nightmare Endless Night which I found it quite catchy and I can't stop watch it for some weird reasons. 




Here is the video: