The fourth annual Christmas at the Library concert will be held at Magness Library, 118 West Main Street, on Saturday, Dec. 22. Doors will open at 6 p.m. and the concert will begin at 7 p.m.The concert will benefit Hamilton Street Activity Center and Magness Library. Hamilton Street Activity Center provides after-school activities for children who live in public housing.Musicians who will be performing various types of Christmas music are Joe Harvey and Heather Mulder, Kevin Harvey, Lee Carr, Griffin Winton and Lucy Haston, Tim Winton, Wendell and Deanna Little, Kelcie Fearing and Robert Hennessee.