See Jennifer Hudson's Emotional Musical Tribute to Whitney Houston at the Grammys

In 1994, Whitney Houston captivated the Grammy Awards with her song "I Will Always Love You." It was stunning:

On Sunday, Jennifer Hudson delivered a tribute to Houston while singing the same song. It was an emotional rendition that showed Hudson on the verge of tears and at least one long pause:

Grammy host LL Cool J also opened the night with a prayer in honor of Houston:

It could be weeks before investigators know exactly why the pop diva died.

Coroner's officials say they will not release any information on an autopsy performed Sunday at the request of police detectives investigating the singer's death. Houston was found in the bathtub of her room, but Assistant Chief Coroner Ed Winter declined to say anything more about the room's condition or any evidence investigators recovered.

There were no indications of foul play and no obvious signs of trauma on Houston's body, but officials were not ruling out any causes of death until they have toxicology results, which will likely take weeks to obtain. Beverly Hills Police Lt. Mark Rosen said that his agency may release more details Monday about Houston's death, but it will depend on whether detectives feel comfortable releasing any information.

But a lack of official information hasn't stopped the rumor mill. Hollywood gossip site TMZ is citing "family sources" who allegedly said the coroner's office told the family that the star died from mixing prescription drugs and alcohol, not drowning.

Those reports are unconfirmed.

The Associated Press contributed to this report.