Yakuza refers to two bands. 1) Avant-Garde / Experimental metal band from Chicago, Illinois, USA. 2) Indie Rock band from Belfast, Northern Ireland. 1) Yakuza is an avant-garde metal band, formed in Chicago in 1999. They have been acclaimed for their incorporation of jazz and world music elements. Staying deeply rooted in a genre all its own, Yakuza’s existence lies on a metal base with progressive flair, while somehow also incorporating elements of jazz, world beat, and post-rock ambience.