When Lee Mendelson produced the 1965 TV special, "A Charlie Brown Christmas," he got San Francisco jazz musician Vince Guaraldi to compose the music. The songs Guaraldi wrote, including "Christmas Time Is Here," are now considered classics. Correspondent David Pogue looks at how the music of Peanuts became inseparable from the joy and melancholy of the holiday season. Air Date: Dec 19, 2021