At first, you may think that you're watching some kind of special effect, but no: they really are twins.
The talented twins' latest is an acoustic version of one of this season's anthems: Demi Lovato's hit "Cool for the summer." But that's not all that makes the video special.
They sing the verses in English, Spanish, and French.
The twins are from Spain, so many of their covers also have Spanish and French verses thrown in.