The platinum-selling Squirrel Nut Zippers never fail to get feet moving with their irresistible blend of hot jazz, swing-revival playfulness, folk storytelling, and off-kilter musical wit. Their latest album, Lost Songs of Doc Souchon, is “inspired by all of the mysterious characters from the history of New Orleans jazz music,” says bandleader Jimbo Mathus. Exploring this universally beloved music while embracing the personable figures who give it such character is, in a nutshell, what makes this ensemble such a vital force and ongoing audience favorite.