Indeed, the word "Cardenche" comes from a cactus plant whose thorn is even more painful upon removal than it is when it penetrates the body. But in spite of the pain, it can't remain stuck in there; it must come out, just as the Canto Cardenche has to come out.
Often sung in vocal groups of three, and accompanied by alcohol, it's a style that has always been passed from generation to generation in rural areas. It's also in danger of extinction. It is currently kept alive in the small northern Mexican town of Sapioriz, Durango, and by artists such as Lila Downs and Juan Pablo Villa, who recognize its simple beauty.
One of my favorite reinterpretations of Canto Cardenche is by Venezuelan DJ Algodon Egipcio. His rendition of "La Espina Del Cardenche" adds instrumentation to the traditionally a cappella music, but it's minimal and ethereal. Rather than sounding like a music track under vocals, it simply sounds like a man floating in the clouds, singing his heart out.