The official state song is “Give Me Louisiana,” written in 1970 by Doralice Fontane, and not only former Gov. Jimmie Davis’ version of “You Are My Sunshine,” as many thought.

“You Are My Sunshine” may in fact be the most ubiquitous piece of music of the 20th century, second only to “Happy Birthday” and “Shave and a Haircut.” Its popularity never wanes with ...