The music world celebrated the life of Whitney Houston last night. As fans mourn the loss of her unforgettable voice, we are learning new details about her final moments. Reports say Houston may have drowned after mixing alcohol and an anti-anxiety drug. Houston's only child, her daughter Bobbi Kristina, has now been released from the hospital after being treated for stress. Jennifer Hudson paid tribute to her Sunday night at the Grammy Awards, singing Houston's famous song "I Will Always Love You." It was the most downloaded single for much of Sunday on iTunes.