Mavis Staples performs Friday, April 18, 2014 at Symphony Center. (Brian Cassella / Chicago Tribune)
Mavis Staples and jazz violinist Regina Carter performed Friday, April 18, 2014 at Symphony Center. (
Jazz violinist Regina Carter performs Friday, April 18, 2014 at Symphony Center. (Brian Cassella / Chicago Tribune)
Jazz violinist Regina Carter performs with her band Friday, April 18, 2014 at Symphony Center. (Brian Cassella / Chicago Tribune)
Mavis Staples performs with her ensemble Friday, April 18, 2014 at Symphony Center. (Brian Cassella / Chicago Tribune)
