Black Men United - U Will Know (Official Music Video) Tevin Campbell, El DeBarge, Gerald Levert, Tony Toni Toné, Boyz II Men, Al B. Sure!, Lenny Kravitz, R. Kelly, Aaron Hall, Brian McKnight, Silk, Keith Sweat, Stokley, H-Town, Christopher Williams, Portrait, Damion Hall, Lil' Joe, Intro, DRS, After 7, Usher, Sovory, Joe, D'Angelo