Unless you're a particularly knowledgeable consumer of music, John Congleton isn't a name that's likely to ring any bells. The thing is, you've probably been exposed to his work, just under a different name. Earl Sweatshirt? Check. St. Vincent? Check. Erykah Badu, The Mountain Goats and Swans? Check, check and check. Congleton is a producer, musician and engineer, and one of many unsung heroes who work behind the scenes to help create the music we love.