Boyz II Men - "In The Still of the Nite"

The quartet from Philadelphia that made up Boyz II Men were arguable the biggest act on the planet in the early-90s.  Their pop-soul sound took over the radio beginning with 1991's "Motownphilly" and their reign didn't loosen until well into the decade.  Sandwiched between two #1 songs ("End of the Road" and "I'll Make Love to You") was the group's a cappella cover of The Platters' "In The Still of the Night".