An American Celtic Christmas is Philadelphia's long-running Celtic Christmas production, presented by Celtic rock band JAMISON. Now celebrating its 16th year, the show returns to the Keswick Theatre on December 19, 2026, bringing together high-energy Celtic rock, Irish music, world-class Irish dance, Christmas favorites and special guest performers. This Philadelphia-area holiday tradition combines the energy of a Celtic rock concert with the music and spectacle of a Christmas stage production, making An American Celtic Christmas a one-of-a-kind holiday experience for the entire family.