Leadbelly (Huddie Ledbetter) sang a verse in "Good Morning Blues" that goes:
Got a new way of spelling Memphis, Tennessee
Got a new way of spelling Memphis, Tennessee
Doulbe E, Double T, WXYZ.

What's it mean?
Beats me. I'm thinking he's saying it's so hard to spell that he starts out and just gives up.
There are a few songs and verses about spelling in the folk canon. Like C-H-I-C-K-E-N.
And my father used to say there was a song that went "Chicken in the car and the car can't go. That's how you spell Chicago."
I never have found that song.