When news arrived in my email box that “Don’t Turn Your Back on Friday Night,” a documentary about an Illinois-based singer-and-songwriter, Ike Reilly, was set to be released at the end of August, I burrowed into my closet and started unpacking the boxes of albums and CDs. Burdensome, they are, and essential. There are some reliquaries that Marie Condo and her deaccessioning ways will never have a purchase on.