Andrew Lloyd Webber - watch your back! This "phantom" of the footlights is the real thing: Showtune showman Ari Sussman, 12, a sixth-grader at Saligman Jewish Middle School, made his professional debut at the piano, playing Broadway hits during the dinner interlude of a special event at Reform Congregation Keneseth Israel, in Elkins Park. Not only that, Ari's in the process of writing his first Broadway score. "The Boys From Syracuse"? This boy from Elkins Park is making his mark. … Enter kvelling: Meanwhile, Matthew Klein, now a frosh at the New School in New York, has won third place out of more than 700 entries in the Philadelphia Young Playwrights Festival; his entry, "Jack and Gina," was written as a senior at the Masterman School. Leading the bravos from their orchestra seats are parents Marsha and Ken Klein of Center City. Now, Matt, if you want to turn it into a musical … Was that really movie-mogul Harvey Weinstein in the flesh at the local Mid-Atlantic Venture Conference, co-chaired by Barry M. Abelson of the legal eagles of Pepper Hamilton? Sure was, delivering the concluding address. … And, now, the winner of Abington Memorial Hospital's "Auxilian of the Year" - the pressure is too much; please, the envelope … Yes, the winner is … all 550 members of the Auxiliary? Well, uh, that's very nice, Barbara Rosenthal, Women's Board prexy, but if you think "Stars" has the room for all those names, think again. … Mind, body - music: David Newman, son of Judge Sandra Newman and the late Dr. Julius Newman, added a musical touch to the Mind Body Spirit Expo, performing at the event, held recently at the Valley Forge Convention Center. … Making rounds: Penn Valley's Dr. Martin Phillips, former dentist, now a banking exec - and, no, "Stars" was not wondering if getting money out of him is like pulling teeth - has been elected governor of the Southeastern Pennsylvania division of Rotary International. … Has West Philly's David Brenner gone suburban? Well, he has for this Sunday's special concert at Har Zion Temple, in Penn Valley, where the veteran comedian will add his sense of humor to the proceedings. Committee chairs are Arlin Green and Paula Yudenfriend of Haverford, and Cathy and Philip Miller of Bala Cynwyd. … Healthy choice: MossRehab has been awarded a five-year grant "to help increase the quantity and quality of cognitive rehabilitation research across the country." … Music men: James Adler, Curtis Institute of Music grad in piano and composition, had his "Memento mori: An AIDS Requiem" European premiere delivered by the Estonian National Male Choir. Meanwhile, alum Benjamin Shwartz has been chosen music director and conductor of the San Francisco Symphony Youth Orchestra, as well as assistant conductor of the San Francisco Symphony. A clash of cymbals, if you please! … What's that about glass houses? Something about Rolling Stones? Whatever. But it is something else for the Hillel Center for Jewish Life, on Penn's campus, recently named to the Top 15 glass structures in a "Maven's Guide to Philly," published as part of Glass Magazine, which bills itself as "the voice of the architectural glass industry." Also among the list: The Kimmel Center. Would hate to have to be in charge of washing those windows. … Great place to earn a living? Works for them. And, obviously, people enjoy working for Toplin & Associates, Inc., named one of the "Best Places to Work" in the region by Philadelphia Business Journal. That's great news for Ellen Toplin, top gun at the Fort Washington marketing/P.R./ad firm. Not that you asked, Ellen, but "Stars" has a great way for you to celebrate: Raises for everybody!