As A Charlie Brown Christmas marks its 50th anniversary in 2 months, we're not going to wait around for a classic piece of music from the show.
That's because "Linus & Lucy", widely known as the Peanuts theme, has been used in nearly every Peanuts special since. The Vince Guaraldi Trio is represented on screen by Schroeder (on his toy piano), Pig Pen (stand-up bass), and Snoopy (guitar), who gets a wee bit carried away near the end of the clip, as he's wont to do.
Jazz musician David Benoit recorded a faithful cover 30 years later for a Peanuts tribute album, but this is the original, definitive version.
Looks like Shermy created a new dance for the occasion, the Treadmill. Too bad Pig Pen was never shown to be this talented again.