The artists' contributions were recorded in different locations and beamed into a BBC recording studio in Maida Vale, north London via the Internet.

The song, a cover of Bob Marley's Them Belly Full (But We Hungry), featured O'Connor, who was based at BBC Television Centre in west London, and Dolby playing keyboards in San Francisco.

Coldcut's Matt Black and Jonathan More recorded the track over the Internet, mixed it and were soon able to play it back to the artists.

The event was shown during a special edition of BBC ONE's Tomorrow's World called Megalab 99 and the single will be sold in aid of the charity War Child.

Benny honoured for services to jazz

Benny Green died last year

The late band leader Benny Green is being honoured for special services to jazz in this country at the British Jazz Awards in London on Wednesday.

Green was taught the saxophone by his father and earned his living with it for 20 years, with bandleaders of the calibre of Ronnie Scott and Kenny Baker.

Singer and film actress Annie Ross, will receive a lifetime achievement award at the ceremony, to be attended by Lionel Bart and Lord Steel.

British-born Ms Ross has appeared in a string of Hollywood films including The Player and Throw Momma From The Train.

The first ever joint winners in the trumpet category are veteran Kenny Baker, 72, and newcomer Gerard Presencer, 26.

Billy Joel says 'this is last big tour'

Bruce Springsteen: "Homesick"

Singer Billy Joel, who has just been inducted into the Rock and Roll Hall of Fame, has said his current tour will be his last big-budget concert jaunt.

After Monday's ceremony he said: "I'm not saying I'll never play again. I'm just not going to tour like I've been touring."

Joel, who is currently in the middle of a three month US tour, said he simply got tired of motels and lying in unfamiliar beds.

Joel, has sold nearly 100 million records world-wide, since making his first recording some 25 years ago.

Anna Friel set for Hollywood fame?

Anna Friel caused a stir as Beth in Brookside

Former Brookside star Anna Friel is tipped for stardom by the magazine Vanity Fair in its special Hollywood issue.

The actress is featured on the cover with other rising stars including Goldie Horn's daughter Kate Hudson, Thandie Newton and Saving Private Ryan co-stars Giovanni Ribisi and Barry Pepper.

Friel, whose breakthrough role came in the film Land Girls, talks the magazine about her jump from TV roles.

"I was one of the first to break that barrier from TV to movies and say: "Judge me on my talent rather than my credit list."