Premise: Boyz II Men is an American R&B vocal group from Philadelphia , Pennsylvania , best known for emotional ballads and acappella harmonies . Formerly a quartet including bass Michael McCary , they are currently a trio composed of baritone Nathan Morris alongside tenors Wanya Morris and Shawn Stockman . Michael `` Mike '' Sean McCary ( born December 16 , 1971 ) is an American singer , best known as the former bass singer of the R&B group Boyz II Men .
Hypothesis: Boyz II Men uses their voice as instruments for music.
Label: ENTAILMENT