This is one of our favorite One Direction performances ever: watch the 1D guys and Jimmy Fallon sing the Christmas classic "Santa Claus Is Coming to Town" with classroom instruments. Brilliant!
Harry, Niall, Zayn, Liam and Louis wear ugly sweaters and get into the holiday spirit with Jimmy and The Roots - and we're definitely fans. We only wish Zayn got some solo singing time, but it's all in good fun, so we'll just soak it all in.
Niall plays a banana shaped maraca, while Harry toots a kazoo and beats a drum, Zayn pings a triangle, Liam claps coconut shells and Louis taps on a tambourine. Doesn't Niall look like he's having the best time ever?
If it left you wanting more One Direction, no worries...they'll be back as guests on Tuesday's Tonight Show to talk more with Jimmy.