Doheny Blues Festival rocks into Sunday on its 20th anniversary

John Primer plays a solo for the crowd at the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

JJ Grey plays harmonica with his band Mofro as the final act on the PCH Stage during the 20th Doheny Blues Festival on Sunday.

Aaron Moreland of Moreland and Arbuckle plays an electric four-string cigar box guitar on the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

The audience shows its appreciation for John Primer, Bob Corritore and Big John Atkinson band at the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

Big John Atkinson, left, and John Primer get into an afternoon groove on the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

Harmonica player Bob Corritore jams with Big John Atkinson and John Primer as they close out the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

Aaron Moreland of Moreland and Arbuckle plays a well worn four-string cigar box guitar on the Backporch Stage during the 20th Doheny Blues Festival on Sunday.

Horn players for JJ Grey and Mofro play in the late afternoon slot on the PCH Stage during the 20th Doheny Blues Festival on Sunday.

To the delight of the crowd, Chris Isaak makes a wardrobe change into a suit of reflective cards during the 20th Doheny Blues Festival on Sunday.

A festival-goer with a plate of nachos pauses at a table of hot sauces during the 20th Doheny Blues Festival on Sunday.

A blue-suited Chris Isaak performs “Down in Flames” during the 20th Doheny Blues Festival on Sunday.