Cee Lo Green is among the artists tapped to pay tribute to Michael Jackson at a concert in October.
The concert, which Reuters reports will take place in Britain, will be broadcast worldwide in 2D and 3D on pay television and movie theaters. Proceeds will go to AIDS and other charities.
Other artists involved include Christina Aguilera, Smokey Robinson, Leona Lewis, Craig David and pop band JLS.
Promoters of the "Michael Forever" concert said other big names would be announced later.
"We're delighted that such exciting and globally recognized acts have joined the line-up to pay tribute to a music legend...We'll be adding more amazing headliners in the days to come," said Chris Hunt, president of concert promoter Global Live Events, in a statement.