Several Ohio Northern University choral groups will perform in the traditional Choral Collage concert at 8 p.m. on Friday,  Oct. 21, in the Presser Hall Snyder Recital Hall. The inaugural concert of the season will feature the Women’s Chorus, the Men’s Chorus, the University Singers and the Chamber Singers singing pieces by Mendelssohn, Thompson, Byrd, Rutter and others. The concert is free and open to the public.