Staged at the Havana Theatre, this unusual show is created by a girl moving various illustrated transparencies above an overhead projector, while, with the other hand, manipulating 2-D figures (a form of shadow puppets, which are usually behind a screen) above the transparencies.   Only a few people sitting in the front row can see how this is done, so the focus of course is on what we see on the big screen.   The pictures are supported in two ways.   A second girl plays a guitar, with the audience supplying sounds (a hiss, engine...