You probably would have seen -- and was impressed -- by Rob Cantor, who made 29 different celebrity impersonations in one song. What you don't know is how he REALLY did it.
Rob Cantor, the singer in the video, performs an original song titled 'Perfect' with his pianist Andrew Horowitz.
The Youtube community was charmed by his impressions of Jack Black, Gwen Stefani, and even Hermit the Frog.
The video has garnered over 7 million views to date:
However, what many don't know is that he actually faked it all. His only job was to lip-sync.
Enlisting the help of many talented singers and impersonators, he pieced together this impressive music video with the help of his sound designer, making it look like he did those impersonations by himself.
He certainly had the Internet all fooled.
Here's the making of it: