Frank and Stein: The Karaoke Musical, by Jerry Gretzinger and Jay Kerr. As the world celebrates the two-hundredth anniversary of the publication of Mary Shelley’s Frankenstein novel, Bobby Stein (played by TV news anchor Gretzinger), genetic scientist by day and karaoke Sinatra wannabe by night, gives a new meaning to Frank’s popular tune, “I’ve Got You Under My Skin.” Transplanting Sinatra’s DNA, easy. Getting ahold of it, not so much. Friday and Saturday at 8PM. Sunday at 2PM.