“This is what set Geeshie and Elvie apart even from the rest of an innermost group of phantom geniuses of the ’20s and ’30s. Their myth was they didn’t have anything you could so much as hang a myth on.” John Jeremiah Sullivan investigates more mysterious musicians in The New York Times Magazine. Bonus: You can listen to their music as you read. For more of Sullivan’s music journalism, read his piece on the origins of ska.