Justin Bieber and Ne-Yo had no idea that they were about to be mashed together before it happened, and I doubt either would have thought that it would work so good.

Youtube user RaheemdaplayaO4 took 'Fa La La' from Bieber and blended both the audio and video perfectly with Ne-Yo's 'Sexy Love'.

Its so good in fact that Bieber shared it on his Facebook page.

Raheem reacted to Justin calling the remix "sick" with this comment.

“This is my mashup I made because I felt these songs suited each other almost perfectly, the lyrics, music video and harmonies, I love both of these songs, I hope you enjoy my mashup.”

Check out the video, and keep in mind that neither Ne-Yo or Bieber had anything to do with it.  It really is amazing.