Camilla Luddington, Chris Carmack, Kimberly Wyatt and comedian Gina Yashere (S01E05)

Mo Gilligan takes the helm of the most popular music game show on television. In this episode, Grey's Anatomy stars Camilla Luddington and Chris Carmack go head-to-head with Pussycat Doll Kimberly Wyatt and comedian Gina Yashere, tackling a series of thrilling musical challenges.