Rock photographer Paul Natkin has collected a bunch of his photos of blues icons, including this one of Muddy Waters, and hung them in the Blue Room at the Mirador restaurant, 1400 N. Wells. Natkin plans to donate the proceeds from any sales to the Chicago Academy of the Arts/Willie Dixon Scholarship fund, but it’s free just to look. The show will be on view through May 12. Call 951-6441 for more information.