Christina Aguilera

*Craig David has some company.

Organizers of “Michael Forever — The Tribute Concert” announced Thursday that Christina Aguilera, Cee Lo Green, Leona Lewis and the band Alien Ant Farm, famous for its cover of Jackson’s song “Smooth Criminal, will join previously-announced David and members of the Jackson family for the scheduled Oct. 8 show at Millennium Stadium in Cardiff, Wales.

While the event is endorsed by the singer’s mother and some of his siblings, brothers Randy and Jermaine Jackson have protested its timing. The concert is scheduled during the trial of Dr. Conrad Murray, who is charged in Jackson’s death.

The singer’s estate is also not affiliated with the concert.