There's Nothing Holdin' Me Back Shawn Mendes
There were originally three members of Sigma, but Cameron's schoolfriend Ben Mauerhoff left because of distance issues.
After their studies, they moved to London with the dream of making it BIG!
The name came from the fact that the music industry demanded that it be their life!
They even supported him on his very first live UK tour!
It went straight to the top of the Vodafone Big Top 40 just hours after it was released on 6th April 2014.
But the video was FAR less raunchy and didn't feature a naked Kim Kardashian. Shame...
They enlisted vocals from Paloma Faith and scored their second Big Top 40 no.1 in September 2014.
Get ready to party hard on Sunday 7th December 2014, when Cameron & Joe take to the stage at London's iconic O2 Arena!