Wax Tailor had a busy 2016. The DJ, whose full name is Jean-Christophe Le Saoût, goes by nickname JC. In October, he released his fifth studio album, By Any Beats Necessary, as well as a short documentary film, “In Wax We Trust,” on YouTube. He completed interviews for the film, while on tour, talking to record store owners across the country. Anxious about music going digital, Tailor wanted to talk directly to those still making a living from records.