[youtube]http://www.youtube.com/watch?v=cdK3myWYD24[/youtube]Judith Owen and Harry Shearer bring their Holiday Sing-Along back to the Contemporary Arts Center for shows tonight and Saturday night. Here’s a preview from Joe’s Pub in New York City with David Torkanowsky on piano and Henry Butler among the singing friends. Here they’ll have guests Torkanowsky, Tom McDermott, Jon Cleary, the Pfister Sisters, Matt Perrine, Phillip Manuel and Leah Chase.