Spice Girls Musical in the Works: Brilliant or Baffling? Here's a blast from the '90s past: American Idol creator Simon Fuller is working on a Spice Girls musical for the stage, with the working title of "Viva Forever." Fuller is collaborating with Judy Craymer, who is behind the Mamma Mia musical, so it's being speculated that the show will use Spice Girls music the way Mamma Mia used ABBA's songs.