Stevie Wonder, Christina Aguilera and Chaka Khan are among the featured performers who will pay tribute to Prince at a concert in the US at the end of the week.
Tori Kelly, Anita Baker and Doug E Fresh also are included in the line-up at Xcel Energy Centre in St Paul.
Prince's ex-wife, Mayte Garcia, has been added to the concert, and Prince will also be represented by members of his inner circle, including Morris Day & The Time, Judith Hill and Liv Warfield.
Pop star John Mayer has bowed out, citing a "change of schedule," concert promoter Randy Levy told the Minneapolis Star Tribune.
The Prince family-sanctioned concert was originally planned for the Minnesota Vikings' new US Bank Stadium in downtown Minneapolis, but was moved to the smaller Xcel Energy Centre, home of the NHL's Minnesota Wild.
Prince's family announced the concert in late July, but details did not emerge until September.
The wait frustrated Prince fans across the country who had already made travel plans without any guarantee of tickets.
But organiser L Londell McMillan, a lawyer for the late superstar, said it took time to put the details together because so many artists were involved.
McMillan told The Associated Press the change of venue was a "business and creative decision".
Prince died of an accidental painkiller overdose at his Paisley Park recording complex in April.
The singer of such hits as Purple Rain, Let's Go Crazy and The Most Beautiful Girl in the World was 57.