Christina Aguilera and Cee Lo Green will perform at a Michael Jackson tribute concert, it has been confirmed.

Organisers of the Michael Forever: The Tribute Concert have promised more acts will be revealed later this year. The show is due to take place on October 8 at the Millennium Stadium in Cardiff, Wales, and is being backed by members of Michael's family.

Motown superstar Smokey Robinson also appears on the bill, as well as British singer Leona Lewis.

"We're delighted that such exciting and globally recognised acts have joined the line-up to pay tribute to a music legend," said Chris Hunt, president of concert promoter Global Live Events.

Michael's mother Katherine Jackson is set to reveal more information about the event in a CNN interview scheduled for August 15.

Several of Michael's brothers will be taking to the stage to perform, along with 3T ' which consists of Tito Jackson's sons.

Rockers Alien Ant Farm ' who enjoyed success with their 2001 version of Smooth Criminal ' and British boy band JLS are also on the bill.

The event will raise money for charities including AIDS Project Los Angeles.

It has also been reported the concert will be broadcast live at large venues across the US.

Although the show is being backed by most of Michael's siblings, his brothers Randy and Jermaine have made it clear they are unhappy with the plans.

'We want to make clear that this does not reflect the position of the entire family," the pair said in a joint statement last month. "While we wholeheartedly support the spirit of a tribute that honours our brother, we find it impossible to support an event that is due to take place during the criminal trial surrounding Michael's death."

The show will be held during the trial of Dr. Conrad Murray ' who stands accused of being involved with Michael's death in 2009.