PHOTO GALLERY: John Mayall, Al Green perform at Roots 'N' Blues

September 22, 2012 | 10:27 p.m. CDT

John Mayall and Al Green performed Saturday night at the Roots 'N' Blues 'N' BBQ festival in downtown Columbia.

Blues artist John Mayall performs for a packed audience Saturday night at the Roots 'N' Blues 'N' BBQ festival in downtown Columbia. | Kayla Kauffman

Blues artist John Mayall performs Saturday night at the Roots 'N' Blues 'N' BBQ festival at the stage at Seventh and Locust streets. | Kayla Kauffman

The bassist for blues artist John Mayall performs Saturday night at the Roots 'N' Blues 'N' BBQ festival in downtown Columbia. | Kayla Kauffman

Blues artist John Mayall performs Saturday night at the Roots 'N' Blues 'N' BBQ festival stage at Seventh and Locust streets in downtown Columbia. | Kayla Kauffman

Al Green performs as one of the headlining acts Saturday at the Roots 'N' Blues 'N' BBQ festival. | Kayla Kauffman

Legendary musician Al Green gives an enthusiastic performance Saturday at the 2012 Roots 'N' Blues 'N' BBQ festival. | Kayla Kauffman

Al Green performs as one of the headlining acts on Saturday at the Roots 'N' Blues 'N' BBQ festival. The annual event also featured such names as Rodriguez and Edward Sharpe and the Magnetic Zeros. | Kayla Kauffman

Al Green greets the crowd at Roots 'N' Blues 'N' BBQ on Saturday. Green was the headlining act for the festival and drew fans from across Missouri and neighboring states. | Kayla Kauffman