Bill McGlaughlin has a new five-day-a-week radio show devoted to composers and their music. The popular “St. Paul Sunday” host says he almost didn’t get into radio, early in his career: “I went to Temple University in Philadelphia, and I had some friends who were involved in the university radio station. It was all pretty much student-run in those days.” The station needed to fill a music slot and McGlaughlin overheard someone proposing him for the job. He also heard the quick response, ‘Nah, nah, that’s not a radio voice.’ “I didn’t think it was. I knew I didn’t sound like any of the classic announcers.”