Houston's autopsy is complete, but it may be some time -- maybe weeks -- before results are released. Houston's life apparently ended in a bathtub at the Beverly Hilton Hotel in Los Angeles Saturday afternoon.
Music heavyweights, including Chicago's Jennifer Hudson, honored Houston during Sunday night's Grammy Awards show. At a Chicago Grammy viewing party, fans were still stunned over Houston's sudden death.
"It is saddening. She was such a big influence on me and as well as everybody else in the industry," said Ralph Murphy.
"All over the world they are feeling their grief about her passing and, you know, one of the greatest voices of all time has passed way before her time," said Tyler Hyslop.
Chicago radio legend Herb Kent devoted part of his Sunday show to remembering Houston.
"She was a marvelous singer," he said. "She was phenomenal."
Houston's 18-year-old daughter has been treated and he released from a hospital for stress and anxiety.
Fans will continue to pay tribute, still mourning the loss of a superstar who was one of the world's best-selling artists from the mid '80s to the late '90s.
Houston's former husband Bobby Brown arrived in Los Angeles late Sunday night to be at his daughter's side.