NY1 VIDEO: It was a blues wailing night at Iridium as The Nighthawks paid tribute to Muddy Waters with special guest Bob Margolin.  The musicians have been friends since the 70s when The Nighthawks often opened shows for Muddy Waters and "Steady Rollin’" Bob Margolin was a member of his band. WFUV DJ Eric Holland talks to Margolin and brings you the highlights in this Sound Advice report.