Katelyn will join Chicago a cappella at The Graff, a graffiti-inspired hidden gem gallery in Humboldt Park, for a unique all-ages, family-friendly holiday party featuring an interactive spray paint workshop led by Studio W.I.P., photo booth, raffle prizes, and, of course, SINGING! We will perform songs from our Holidays a cappella concerts and lead attendees in a holiday sing-along. Tickets and more info.