Chicago’s Neal Francis owes a lot to musicians that came before him, and honors that in every note or shimmy across the stage. On his new record, In Plain Sight, he shares a lot of DNA with artists like Benny Sings or Eric Johnson of Fruit Bats. But let loose upon a stage on a Saturday night in Milwaukee the deeper roots of Dr. John, Traffic, and an entire history of psychedelic soul come rushing to the surface.