The symmetry between the two was on full display at Ravinia, an outdoor music venue north of Chicago. Plant and Krauss proved that while many male-female duos have come before them, few if any have done it better.

Along with Phillip-Michael Scales, Keb’ Mo’ treated the Father’s Day crowd to a pleasing mix of jazz, blues, folk, pop, and a little rock ‘n’ roll thrown in as well.

On ‘Seven Blues Classics,’ Giles pays homage to American blues music’s true greats from the Delta to Chicago.

His time with the Drifters allowed him to grow vocally, and what you hear on his new album ‘It Ain’t Easy’ is blues from the soul.