Cathasaigh will be performing her Christmas Tour on Friday, Dec, 3 at the Oasis Coffee Center, 1912 Brownsville Road, Carrick.
The last three years she has been voted Pittsburgh's No. 1 acoustic solo performer. Doors open at 6:30 p.m.; and they will be serving handmade pierogies from Pierogies Plus in McKees Rocks, as well as eggnog shakes and other specialty drinks.
A free will offering will be taken for Cathasaigh at some point in the evening.
The Oasis will be reserved for concert attendees that evening for those worried about being overrun with kids. The Oasis is available for private or public parties and functions.