The duo, who together make up Superfruit, speeds through every melody from "Welcome to New York" to "Clean" with perfection, which should come as no surprise after their Beyonce masterpiece (see below).
The video also acts as an impressive promo for the Pentatonix's just-released album called That's Christmas to Me. The other members of Pentatonix are Kirstie Maldonado, Avi Kaplan and Kevin Olusola.
This distilled version of 1989 comes after the album sold 1.2 million copies in one week, more than any album of the past decade.
Watch the video below to see Pentatonix sing our ET theme song.