Chicago a cappella performs a concert of African-American spirituals, "Wade in the Water," featuring the world premiere of a new commission, "Nobody Knows the Trouble I've Seen," by Grammy Award-winning arranger Joseph Jennings, former music director of the men's choral group Chanticleer. Artistic Director Jonathan Miller's new cycle, OId Testament Spirituals, also receives its world premiere at this concert. "Wade in the Water" takes place at 8 p.m. Saturday, Feb. 4, in Wentz Concert Hall at the Fine Arts Center, 171 E. Chicago Ave. Tickets are $35 or $28/adults, $22/senior citizens and $12/students; group rates available. For tickets and information, visit chicagoacappella.org or call 773-281-7820.