Stars on Sondheim: Debbie Allen on Which Sondheim Song She'd Like to Sing to the Legend
March 22 marks Stephen Sondheim's 90th birthday. It's impossible to state the great contribution and influences this titan of the stage has made to musical theater, but we're taking a stab at it by reaching out to some stars who have appeared in his many shows to share their personal experiences. Three-time Emmy winner Debbie Allen is an executive producer and cast member of Grey's Anatomy, but she's also a B…