Ray J was suffering from exhaustion and dehydration.
The duet with Jordin Sparks was recorded four days before Whitney Houston died.
Jordin Sparks paid tribute to Sparkle co-star, the late Whitney Houston, at the 2012 Billboard Awards. The 22-year-old singer performed "I Will Always Love You."
(Photo: Ethan Miller/Billboards2012/Getty Images for ABC)
Memorable moments and appearances of the night.
Bobbi Kristina delivers touching speech in honor of Whitney Houston.
Bobby Brown performs “Don’t Let Me Die” on The Tonight Show With Jay Leno.
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