OMG! Whitney Houston can sing again.

Whitney Houston was a surprise guest on BET's annual "Celebration Of Gospel" event which aired Sunday. The singer joined her friend, Christian vocalist Kim Burrell on stage for a moving inspirational rendition of Houston's "I Look To You,", Burrell opened the song alone before Houston joined her on the stage.

She's nowhere near what she used to be..(dem drugs and all) but she's coming back
Watch Whitney Houston's performance at the 2:05 mark when you continue...