 The song was completed in 40 minutes, and went on to become one of the most performed Christmas songs of all time.Tormé and Wells parted ways in 1949, and Wells went on to write extensively for film and television, as well as to continue to collaborate on popular songs with numerous other musicians and writers.Among his collaborators were Duke Ellington, Cy Coleman (with whom he was nominated for an Emmy), and Henry Mancini (with whom he was nominated for an Oscar).