Twyla Tharp is busy these days with several projects at once. But, she tells Frank Rizzo, “Multi-tasking is not healthy. Nor is it ultimately productive. I don’t look at [what I do] as multi-tasking. I look at it as quick shifts of gear.” Does she miss having a home base to work out of? “What is this word `home’ you keep using?” It would be a lovely thing, but I never had a home. I’m basically still moving from studio to studio…”