A child prodigy on Late Show?

Question

Sorry if this is in the wrong category.

In 2003 or 2004, a boy appeared on Late Show with David Letterman who was accepted to college at the age of 10 or so. He said he would pursue four Ph.D.s in Biology, Political Science, Astronomy, and something else (I forgot).

Does anyone know what his name is?

Answer 1

Kit Armstrong compared to Mozart for his piano and composition skills.
Kit, who is also studying chemistry and abstract algebra at the University of Pennsylvania, recently landed professional management from the same talent agency that represents Jennifer Lopez, Diane Keaton and Yo-Yo Ma.