An all-star cast, featuring Akon, Angela Bassett, Mary J. Blige, Sister Sledge, Natalie Cole, and controversial crooner Chris Brown, will perform at a tribute concert to Michael Jackson in Vienna later this month, organizers said Tuesday.

Thirteen artists so far have been confirmed to perform at the concert, set in front of Vienna’s Schoenbrunn Castle on September 26, Michael’s brother Jermaine Jackson and producer Georg Kindel told reporters at a news conference in Vienna this morning

All the artists will sing the King of Pop’s greatest hits — “Thriller,” “Billie Jean,” and “Black or White” — and will be supported by the band and dancers which were to accompany Jackson on his planned “This Is It” series of comeback concerts in London before the king of pop died in June.

In a grand finale, all of them will sing “We Are The World” and “Heal The World” together, Kindel said. MJ’s two children and his mother Katherine will also be in attendance.

A total of 20 to 25 artists are expected for the concert, and fans can expect more names to be revealed at separate news conferences in London on Wednesday and in Berlin on Thursday.

Tickets range from $78-$702.