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Watch The Whole 'Star Wars' Cast Sing The Theme Music A Cappella

The classic theme gets a gleeful makeover.

If you've been avoiding all things "Star Wars" out of fear of seeing a spoiler, but you still want to be part of the exciting lead-up to the film's big debut in theaters, then here is the video for you.

There aren't even words; just sweet, sweet harmony.

The "Tonight Show" acappella mashup of all the musical themes from "Star Wars" features all the major cast members of "Star Wars: The Force Awakens," including BB-8 and a very confused Chewbacca, bum-bum-bumming along with help from Jimmy Fallon and The Roots.

As acappella medleys go, this one is (sorry, I have to) pitch perfect.