The McGill-Toolen Catholic High School Chamber Singers will participate in a workshop led by University of Notre Dame Folk Choir founder Steve Warner and hold a concert at 6 p.m. April 25 at Spring Hill College’s St. Joseph Chapel. The concert is free and donations will be accepted. Warner will serve as the guest director and the concert will feature Warner’s original sacred music compositions. The concert program will include “The Lord’s Prayer” from The Mass for Our Lady, “Lead Kindly Light” and "The Irish Blessing.” McGill-Toolen’s Chamber, under the direction of Beth Haley, is an auditioned chorale group which has received national recognition in choral competition. The Chamber singers represent McGill-Toolen at many archdiocesan liturgical events as well as events throughout the community.