Since July 15, 2016, Charles Esten has released an original song every Friday in his #EverySingleFriday series, culminating today with his 52nd track, “Long Haul.” In doing so, Charles becomes the first independent country artist to released back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back-to-back songs over the course of one year. That’s 52 “backs,” which is quite a streak. “I guess…