Watch above as the a cappella superstars deliver all the sass in Trainor's original, but add in soulful harmonies on the pre-chorus and choruses. Listen up for the quintet to add in a new section before the final chorus!
PTX's take on "No" is the group's first new cover since they released their full-length Pentatonix LP in October, which boasted covers of hits like "Where Are Ü Now," "Lean On" and "Cheerleader" as bonus tracks on the deluxe edition.
In other Pentatonix news, next week the group kicks off their world tour, which Fuse named one of spring's must-see tours. Get more info about the trek and all the other tours coming soon in our spring tour preview.
Watch Fuse's report on a cappella taking off on YouTube, including an interview with Pentatonix, below: