Ronald Harwood's four-hander has journey/destination issues. As a play, the story of former classical singers in a retirement home ultimately disappoints. The destination -- tabloid revelations and a Karaoke comeback -- reduces the story to silliness. And the journey? The cast, senior citizens all, performs as if at their high-water mark. Robert Foxworth, Elizabeth Franz, Jill Tanner, and Roger Forbes give a master class in ensemble acting, thanks to Richard Seer's nuanced direction. The design work, from Ralph Funicello's set to Charlotte Devaux's costumes, both fading, has an "over-the-hill" quality enhanced by York Kennedy's lighting. Harwood wrote The Dresser, that wonderful tribute to the theater. Quartet's as far a cry from Dresser as the singers' past is from their current abilities. But if you're a "journey" theatergoer, and relish fine acting, then the Old Globe's show is...