What makes this dance practice "Special" besides its title is that, this is their first dance practice video that has been released to the public.
Beast or B2ST is a six-member boy band from South Korea, formed in 2009 by Cube Entertainment. The band's members are Yoon Doo-joon, Jang Hyun-seung, Yong Jun-hyung, Yang Yo-seob, Lee Gi-kwang, and Son Dong-woon.
I prefer people would use B2ST than Beast on the internet. Because when you search "Beast" on the net, a lot of Beast(from X-Men) pops up in the search result and other beastly.....stuff.