Apparently these dancers have been coming and performing at Yoyogi park every Sunday for 30 years. Or so I read somewhere on the internet. It was pretty cool, seeing dozens of them all done up in costume and alternating sub-groups to dance to music. They played the part pretty well too, chugging cans of something (beer?) and chucking the open cans between themselves to share a drink, after plenty of liquid flew into the breeze.