Opening Acts for the upcoming Robert Cray show on May 21, 2011 at the 7 Flags event Center in Clive are Des Moines’ own Voodoo 3 and Bella Soul. The show starts with Voodoo 3 at 8 PM followed by Bella Soul at 9 PM with Robert Cray taking over the stage at approximately 10 PM. Great reserved seats ar…e still available and the 7Flags Event Center Box Office