“No new tune has entered that repertoire since the novelty number “Grandma Got Run Over By a Reindeer” became an unlikely yuletide favorite three decades ago. The majority of these songs, however, are from a quainter, more innocent-seeming time, untainted by postmodern irony or a disillusion with anything that reeks of consensus. Listening to them each year has become a surreal nostalgia trip.” Or requires barf bags. McCartney’s “Simply Having A Wonderful Christmas Time” does that to me. Yes, I’m a Christmas music Grinch.