Talk about bellydancing. Tammy Rosen was six months pregnant when she took to the stage to dance the solo "Origins" in NEW ART's January concert. Make that a sort-of solo. April Greengaard choreographed it as a duet for a new-mom dancer and her baby several years back, but Rosen danced it with her baby still inside her belly. Always a graceful and engaging dancer, Rosen easily balanced her giant tum through the modern work, her gameness and megawatt smile earning her a standing ovation from the crowd. Five months later, at NEW ART's June concert, fans got an out-of-belly glimpse of young Katie Rose in her mother's arms, when Rosen took a bow for "Trickster," a work she and Leigh Ann Rangel choreographed. The intrepid Rosen had composed a part of the piece when the wee one was just weeks old.