The Chicago Blues Festival kicks off tomorrow, bringing three jam-packed days of excellent live blues to Grant Park. This week’s B Side features a guide to the fest by David Whiteis, Bill Dahl, Peter Margasak, and Miles Raymer, which covers the action inside the park as well as a whole bunch of shows happening outside it. And there’s more blues in Artist on Artist: guitarist Rockin’ Johnny Burgin interviews harmonica legend Charlie Musselwhite, who plays at SPACE in Evanston tonight.