Cropper also became known to younger fans as member of the group backing Blues Brothers John Belushi and Dan Aykroyd.
Gwen Ifill sat down with Lonnie Bunch, the director of the Smithsonian Museum of African American History and culture, which is due to open this weekend. Bunch says that leading the museum has been a humbling experience, and that he's often stopped by people on the street who are excited about the museum's opening. "Once you have this museum on the mall, it's going to be there as long as there's an America," Bunch said.
Watch our full report on the opening of the museum tonight on PBS NewsHour.
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