• By Rudolfdiesel
• St. Olaf Choir singing in Boe Chapel, St. Olaf College

For more than a century, Minnesota's world-renowned St. Olaf Choir has been performing deftly arranged versions of spirituals and songs of worship as well as some of the heavy-hitters from the secular classical canon like "Lacrimosa" from Mozart's Requiem. Expect a night of exactly that sort of thing when conductor Anton Armstrong and his cohort of purple-robed wonders take the stage at the Van Duzer Theatre today for a Sunday matinee at 3 p.m. ($49).