Rapper Jay-Z [ tickets ] is lining up a slate of special guests who will join him on the remaining dates of the aborted Best of Both Worlds Tour, which broke apart last week with the ouster of co-headliner R. Kelly [ tickets ].

The outing has been re-dubbed Jay-Z and Friends, and will resume Friday (11/5) in Miami with special guests Mary J. Blige, P. Diddy and others. The line-up of guests may vary from city to city.

According to promoters, ticket-holders unhappy with the revamped lineup can obtain refunds at the point of purchase. Deadlines for obtaining refunds vary.

Jay-Z and Kelly's co-headlining tour was canceled Saturday (10/30), a day after a member of Jay-Z's entourage allegedly attacked Kelly with pepper spray. Kelly has since sued Jay-Z and his production company, alleging that they sabotaged his performances.

Ironically, "Unfinished Business," the second album by the now-feuding Kelly and Jay-Z, enters The Billboard 200 chart this week at No. 1.