The Dordt College Concert Choir from Sioux Center, Iowa, will perform a concert at 7 p.m. on Thursday, March 15, at First Christian Reformed Church, 305 Boesch Dr. in Ripon. This free concert is part of a spring tour with performances scheduled in Colorado, New Mexico, Arizona, and California. Dordt College is affiliated with the Christian Reformed Church, which has congregations in Ripon, Modesto, Escalon, Oakdale, Fresno, Merced, and Sacramento (plus Zion United Reformed Church).