Pentatonix have revealed their Sam Smith mash up today (2 September).
This is their latest release from their forthcoming album PTX Volume 3, following their cover of Ariana Grande's Problem.
With more subscribers than Beyoncé and over half a billion views on YouTube, this group is comfortably the biggest a cappella group in the world.
The openly gay members are Mitch Grassi and Scott Hoying, with the other members being Avi Kapling, Kirstie Maldonado and Kevin Olusola.
PTX Volume 3 will be released on 23 September.