Robin Gibb's friends have revealed that the Bee Gee kept a 'Bucket List' by his bedside and added to it daily before falling into a coma on Friday. 

The 62-year-old singer, who suffers from liver and colon cancer, was writing lyrics and scribbling down ideas and plans for the future in a notebook, while being treated for pneumonia, the Daily Mirror reported. 

One of Gibb's main wishes before he dies is to set up a children's charity involving music, his friend told the Daily Mirror. Gibb's condition has deteriorated considerably in the past 48-hours and reports have surfaced that he only has a few more days to live. 

His family is taking   it  hour-by-hour, praying for a miracle. But  with Robin they know never to give up, the family friend said. 

Gibb's wife Dwina and son Robin-John are leading a vigil. They were joined by Gibb's brother Barry and mother Barbara, 91, who flew in from the U.S. to be by her son's side. 

In the past year Gibb's health condition has been erratic. In February he celebrated his recovery from cancer, but was later readmitted to hospital for intestinal surgery, the BBC reported.

 He has kept so positive and always believed he could beat this. Sadly, it looks like he has developed pneumonia, which is very bad in his situation, a source told the Sun Newspaper.

Gibb was first diagnosed with cancer 18 months ago, when he was undergoing bowel surgery. The doctors found a tumor and diagnosed him with cancer of the colon and later with cancer of the liver. 

Gibb was forced to cancel his appearance at the premiere of Titanic Requiem on Tuesday, which he composed with Robin-John. 

His spirit has been shattered since the pneumonia and he has gone visibly downhill. Before he slipped into a coma he was struggling to get out of bed without a wheelchair, a family friend said. 

Gibb was born in England in 1949. He founded the Bee Gee's with his twin brother Maurice and moved to Manchester to start performing. The Bee Gees released their first record in 1963. The brothers rose to fame for their hit records Jive Talkin, Stayin' Alive and Night Fever.