Among the stars expected to appear (and possibly perform) at the public event � which will take place after a private memorial earlier in the morning � are Jennifer Hudson, Mariah Carey, Stevie Wonder, Usher, John Mayer, Lionel Richie and Motown founder Berry Gordy, according to a statement from a spokesperson for the Jackson family.

The list does not specify which of the attendees will perform, but Carey is reportedly slated to reprise her famous cover of the Jackson song "I'll Be There" at the public ceremony
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