The Mercyhurst University Concert Choir and String Ensemble will present a concert of seasonal music on Friday, Dec. 5, at 7 p.m. at Immanuel Lutheran Church, 1002 Powell Ave. Rebecca Ryan directs the Concert Choir and Dr. Joseph Kneer the String Ensemble. Mercyhurst music faculty member Lydia Beasley will be the featured soloist in an arrangement of "O Holy Night" by alumnus Jonatan Estrada. The choir, joined by the strings, will present a little-known work, "Magnificat," by the great-grandfather of the more familiar Giacomo Puccini. The program will also include works by Vivaldi, Sibelius and Mozart performed by the strings; Renaissance a cappella works conducted by students; and an arrangement by John Rutter of five carols for choir and strings, including an invitation for the audience to sing along. The concert is free and open to the public; call 814-824-2394 for more information.