January 23, 2013 6:34 PM

Timothy Finn | Sweet Honey in the Rock keeps the songs flowing

If longevity is a function of consistency and change, then there’s little mystery about why Sweet Honey in the Rock, which performs Wednesday at the Kauffman Center, is about to celebrate its 40th anniversary. The African-American, all-women a cappella group has engaged in a variety of projects that involve more than just keen vocal prowess.

Related content