Bone Thugs-N-Harmony is a U.S. rap group formed in Cleveland, Ohio, United States in 1991. It consists of rappers Krayzie Bone, Wish Bone, Flesh-N-Bone, Layzie Bone, and Bizzy Bone. Perhaps the group’s most important contribution to rap is their speedy, harmonizing flow. While fast rapping has always had a niche in the culture, Bone certainly brought the style to the forefront. In addition, the group’s ability to harmonize whilst flowing at top speeds is truly remarkable. Not before nor since has a rapper or rap group sung an a cappella tune without loss of street cred.