Whitney Houston's mother performed a rousing, emotional tribute to her late daughter at the BET Awards.

Beyonce, Melanie Fiona and others cried as Cissy Houston sang "Bridge Over Troubled Water" last night.

Mariah Carey opened the tribute with memories of her friend.

She was followed by a moving number by Monica.

Brandy, heavily influenced by Houston, sang two of the late singer's hits.

Chaka Khan blazed the stage with "I'm Every Woman," which Houston remade.

Gary Houston, Whitney's brother, also performed.