Speaking to Britain's Sunday Express newspaper, Gibb's son, RJ, 28, shared the emotional story.
Family members, including RJ, his mother Dwina and Gibb's other children, had kept a bedside vigil for nearly two weeks, singing songs and talking to the unconscious singer. Then, finally, a "miracle."
Gibb opened his eyes, looked at his son and uttered, "Hello RJ."
It's been a long road to recovery for the singer. Gibb, 62, revealed his battle with liver and colon cancer in October 2010. He had emergency surgery to treat a blocked bowel and another operation to treat a twisted bowel (his twin brother, Maurice
, died from the condition in 2003 at age 53).
His younger brother, Andy
, died of a heart ailment in 1988. He was only 30.