As host of NPR’s Tiny Desk concert series, Bob Boilen has gotten to know plenty of musicians. And he likes to ask them to name a song that has profoundly affected them. He’s compiled some of their answers in a new book, called “Your Song Changed My Life: From Jimmy Page to St. Vincent, Smokey Robinson to Hozier, Thirty-Five Beloved Artists on Their Journey and the Music That Inspired It.” I sat down at NPR Headquarters recently with him to talk about it.