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OTRC: Bee Gees' Robin Gibb, 61, appears frail after battling illness in hospital (Video)

Robin Gibb of The Bee Gees appears on ITV's 'Alan Titchmarsh Show' on Oct. 24, 2011. / Robin Gibb appears in a photo posted on his Facebook page on Oct. 7, 2010. (ITV / facebook.com/pages/Robin-Gibb/28951845275)

Concerns about the health of Robin Gibb, one of the three members of the high-pitched pop group The Bee Gees, have been raised due to his recent shockingly frail appearance in photos and on television, more than a week after he underwent treatment at a hospital for colon inflammation.

The 61-year-old singer was also "too ill" to attend the launch of the official song for The Poppy Appeal, a fundraiser for military charity The Royal British Legion, at Prime Minister David Cameron's residence in London on Monday, the UK newspaper The Daily Mail said.

Gibb's representatives had no immediate comment on the report, which also featured celebrity photos of the singer appearing much skinnier than usual. Later on Monday, Gibb did appear on the "Alan Titchmarsh Show" and apologized on camera for missing the meeting on Monday, the day his Poppy Appeal 2011 single, "I've Gotta Get A Message To You," a cover of a 1968 Bee Gees song, was released officially.

Gibb was hospitalized on October 13 after suffering from abdominal pain and was treated for inflammation of the colon. He was discharged on October 17, a statement on his website said, adding that he was recovering at home and "plans to slowly resume work over the next couple of days.

On "The Alan Titchmarsh Show," the host addressed Gibb's health in a face-to-face interview, saying: "I know you've not been too good lately. We're delighted that you're insisted on coming and doing this love so bless your heart for coming. How are you doing? Are you on the mend?"

Gibb, while smiling, avoided the question.

Gibb underwent surgery in 2010 for a blocked intenstine. His twin brother and fellow Bee Gees member, Maurice, who died in 2003 at age 53 in Miami. He had suffered a cardiac arrest before an emergency surgery for an intestinal blockage.

The Bee Gees, a Grammy-winning pop and disco trio, was formed in the late 1950s and was made up of the two brothers and their older brother, Barry. The group was best known for 1970s hits such as "Stayin' Alive," "How Deep Is Your Love," and "More Than a Woman," all of which were featured on the soundtrack of the 1977 dance film "Saturday Night Fever."

"I can't ever recall a moment where we tried to be a certain thing," Gibb said in an interview posted on his YouTube page in September. "We just had fun and wrote songs and our only concern was those songs be sung and recognized. It's been very fulfilling to be a composer."

Check out Robin Gibb's full interview below as well as exerpts from his appearance on ITV's "Alan Titchmarsh Show."

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