“We created rock and roll. We created swing,” says Terence Higgins, the veteran drummer of Louisiana’s legendary Dirty Dozen Brass Band, in the new documentary Take Me to the River: New Orleans. (Beginning April 22, it will play at select theaters around the country.)  Directed by Martin Shore, it captures accomplished musicians—all from within a 100-mile radius of the city—as they record an album of the same title. The film follows Shore’s 2014 documentary Take Me to the River, created using a similar concept and centered on artists from Memphis, Tennessee; this time, the focus is on the Big Easy, and on unpacking the city’s rich musical heritage, legacy, and global influence.