Michael's brother Jermaine Jackson had struggled to get R&B stars Mary J. Blige and Chris Brown and veteran singer Natalie Cole to confirm they could attend, fuelling speculation the gig would be canceled for lack of interest.

"Due to the short time frame it was not possible for many of them to change their schedule so that they could be on stage in Vienna on September 26, therefore we decided, after careful consideration, to change the date of the tribute concert to the summer 2010," he said in the statement issued in London. - more on this story

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