1. Big Boss is a hardcore band from Tyumen, Russia. https://bigbosss.bandcamp.com/ 2. Big Boss, real name Jiří Valter (* 1952), is the vocalist of the legendary Czech metal band Root. He's released three solo projects, called Q7, Belial's wind and Doomy Ballads, under his stage name. He's also a vocalist in his other band Equirhodont and in a frolicsome band YBCA. Read more on Last.fm