Entertainment Weekly:
http://insidetv.ew.com/2013/05/20/john-barrowman-debbie-gibson/:
First, actor John Barrowman (Torchwood, Arrow) will host the show, where five celebrity contestants take on the identity of an iconic music performer each week.
The judges are former Saturday Night Live cast member Darrell Hammond and pop singer Debbie Gibson. And the show’s contestants learning to perform the hits of famous music stars are ex-Skid Row frontman and heavy metal singer Sebastian Bach, comedian Jon Lovitz, Toronto Raptors player Landry Fields, teenage Disney Channel actress-singer China Anne McClain and former soap star Lisa Rinna.
There’s no air date yet, but the production seems to gearing up for a potential debut this summer.