Boston Globe 12/17/09: A new genre, Jewish rock, touches down in Boston, Brookline, and Wayland. Click the play button on the website, and at first the concert videos look like any rock show. The bass drum pounds out a backbeat. Colored spotlights rake a crowd of cheering, swaying teens. And Rick Recht looks every bit the rock star, with his long hair and worn jeans, as he steps to the microphone. But here’s the twist. He starts crooning a Jewish hymn such as “L’cha Dodi,’’ and hundreds of young voices sing the Hebrew lines back at him – along with a few random squeals. Such is the look and sound of a new genre, Jewish rock music. Rick Recht performs his “Shabbat Alive!’’ concerts on Saturday at 6pm at Temple Shir Tikva, 141 Boston Post Road, Wayland, $10 ($36 per family maximum), 508-358-9992, www.shirtikva.org.