Boyz II Men

Boyz II Men is an American R&B vocal group best known for emotional ballads and a cappella harmonies. They are the most successful R&B group of all time, having sold more than 60 million albums worldwide. Currently the group is a trio, featuring baritone Nathan Morris alongside tenors Wanya Morris, and Shawn Stockman. In the 1990s, Boyz II Men found fame on Motown Records as a quartet, but the original member and bass singer Michael McCary left the group in 2003 due to health issues. The quartet won four Grammy Awards, and the trio was nominated for two Grammys in 2009. - Wikipedia