For those who love music, the Christmas season can present a conflicted situation. Often, a favorite carol or album is essential to enjoying the season and to connecting current celebrations to those of years past. Many music lovers seek out and delight in annual performances by dependable ensembles of particular works, such as “The Nutcracker” or Handel’s “Messiah,” or pull out a collection of CDs that only sees the light of day during the portion of the year with the least daylight.