Bone Thugs-n-Harmony

Bone Thugs-N-Harmony (formerly known as B.O.N.E. Enterprises) is an American hip hop group. Its members are Bizzy Bone, Wish Bone, Layzie Bone, Krayzie Bone, and Flesh-n-Bone. The group was signed to Ruthless Records in late 1993, when they debuted with their EP "Creepin on ah Come Up". The EP included their breakout hit single "Thuggish Ruggish Bone". Their hit song "Tha Crossroads", won a Grammy Award in 1997. It was a tribute to Eazy-E. 
The group is considered as one of the greatest hip hop groups of all time. Bone Thugs-n-Harmony is the only group that has worked with Tupac Shakur, the Notorious B.I.G., Eazy-E, and Big Pun while they were all still alive. About.com ranked them number 12 on its list of the 25 Best Rap Groups of All Time. MTV called them "the most melodic hip-hop group of all time."