Gershwin tribute-Carnegie Hall around '97-great cast of characters including Mike Feinstein etc. see more!?

so many great performers were in that show, on PBS, but there was an older gent playing piano while Michael Feinstein sang. What was his name? He was the last one alive who worked w/the G's and he was quite old. Cant even remember name of song. Christine Ebersole was in the show, along with (& I cannot remember his name, how embarring) a regular on Sat. Nite Live. Does this ring a bell to anyone? I hope? Even the man that played the neighbor on married w/children sang ( the orig. actor). soooo, I adore Michael F. and yet I cannot remember the elderly gent that played the piano while Mike sang. Please, PLEASE tell me someone either knows his name, or a website to go to to view it! Thanx sooooo much.