NEW YORK, N.Y. (WUNF) — At Z100’s Dunkin’ Donuts Iced Coffee Lounge Wednesday, Christina Grimmie performed her music to an audience in a private performance.

NEW YORK, N.Y. (WUNF) — At Z100’s Dunkin’ Donuts Iced Coffee Lounge Wednesday, Christina Grimmie performed her music to an audience in a private performance.