Whitney Houston remembered at Grammy Awards (VIDEO)

The music world paid tribute to the life and career of singer Whitney Houston at the 54th annual Grammy Awards in Los Angeles on Sunday evening, one day after her tragic death.

The star was found dead in her Los Angeles hotel room and the coroner confirmed that Houston, 48, was found in the bathtub, the BBC reported.

The Los Angeles County coroner's office said it performed an autopsy on the singer's body Sunday, they would not have a cause of death until toxicology results are available in six to eight weeks, the Los Angeles Times reported.

According to the paper, officials are investigating whether Houston may have drowned, in addition to pursuing other possible causes.

Houston struggled with drug and alcohol problems for years, and last May her spokeswoman said the singer was going back into rehab.

Houston was in Beverly Hills for music industry titan Clive Davis' annual pre-Grammy party Saturday night at the Beverly Hilton.

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Host LL Cool J began the Grammy Awards with a prayer for Houston.

"There is no way around this," he said. "We've had a death in our family. So at least for me, for me, the only that feels right is to begin with a prayer."

The audience rose to a standing ovation after watching a clip of her hit "I Will Always Love You."

Later in the CBS broadcast, singer Jennifer Hudson performed a special tribute to Houston, who won six Grammys during her career, singing that iconic song:

Chaka Khan did not join Hudson on stage for the tribute, as previously scheduled. "As I grieve the loss of my friend and 'little sister,' I don't feel it appropriate to perform at this time," the singer tweeted. "Continue to pray for the family."