Wasn't Bel Biv Devoe's cd called Cooleyhighharmony? Kinda off topic I guess.
Boyz II Men
They are from Chicago though.
Actually from Philly. But the movie they named that album after was about a HS set in Chicago.
Motownphilly back again
Doin' a little eastcoast swang
Boyz II Men, on the way now
Not too hard, not too soft