It was supposed to remind you of Marie Laveau.
And now thatI’ve read the lyrics to Dangerous Dan McGrew, how to forget them???
Margaret Rutherford recited part of it in “Murder Most Foul”, an early Miss Marple:
https://www.youtube.com/watch?v=N1ETEfIGCKg
Ooh, Voodoo, no thank you. :)