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.