The duet has a nasty habit of getting maligned as a smarmy and insincere musical form. All too often you get vapid "stars" banding together to butcher some old standard in an effort to simultaneously leap on each other's bandwagon. On the other hand, when done well, a duet can transcend any other musical form by combining the strengths of two musicians to create something that shows real communication between the artists. It takes teamwork to make a great duet and if there's one thing that's certain, Carolyn Mark is all about teamwork. And her co-hosts are too.